Glossary

How Western astrology works

The tropical zodiac, twelve houses and the aspects between planets: the system most English-speaking readers have met.

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It measures from the equinox

0° Aries is the moment the Sun crosses the celestial equator each March, and the twelve signs are twelve equal 30° spans counted from there. That is the tropical zodiac. It ties the signs to the seasons instead of the constellations behind them, which is why Aries carries the feel of early spring.

Three layers: planet, sign, house

The planet says what part of you is acting, the sign says how it behaves, and the house says where in life it shows up. Aspects then show which planets are wired together. Sign alone is the version most people have read, and the other layers are what make a chart describe one person.

This chart uses whole-sign houses

Each house is exactly one sign, so if Leo is rising, all of Leo is the 1st house. It is the original Hellenistic system and the one Vedic astrology uses, which lets you compare your Western and Vedic charts house by house. Placidus is more common in modern Western apps and can put some planets in a different house.

What needs an exact birth time

The Ascendant moves through all twelve signs every twenty-four hours, so it needs the time and the place, and every house follows from it. The Moon changes sign on roughly one day in three. Without a birth time, this app shows the signs and leaves out what would be a guess.

Modern rulerships

Uranus, Neptune and Pluto are counted, which is the modern convention. Traditional astrology came before their discovery and gives Aquarius to Saturn, Pisces to Jupiter and Scorpio to Mars. Both are real bodies of practice, and this app follows the modern one.

Planets

Sun

The center of your chart: what you are here to do and what makes you feel most like yourself.
What it is
The sign the Sun was in on the day you were born, the one people mean when they ask your sign. The Sun moves about 1° a day, so it spends roughly a month in each sign and your Sun sign rarely depends on the birth time.
What it stands for
Astrologers read the Sun as your core drive and the way you want to shine. A Leo Sun wants to be seen and a Virgo Sun wants to be useful, and both feel flat when they cannot do that. It also stands for vitality, pride and, traditionally, the father.
Why it matters
The Sun shows what fills you up, so a life that ignores it feels like wearing someone else’s clothes. Its house shows where you most want to make your mark, such as work in the 10th or creative play in the 5th.
Try it
Find your Sun’s sign and house in "Every placement, in detail". Finish the sentence "I feel most like myself when I…", then check whether this week had any of it.
Common mistake
Treating your Sun sign as the whole chart. It is one of ten planets, and many people recognize themselves more in their Moon or rising sign, which is why Sun-sign columns so often feel off.

Moon

Your emotional reflexes: what you need to feel safe and what you do when you are tired or upset.
What it is
The sign the Moon was in when you were born. It is the fastest body in the chart, moving about half a degree an hour and changing sign every two and a half days, so on roughly one day in three you need a birth time to know it.
What it stands for
Astrologers read the Moon as your needs, moods, habits and home life, the part of you that reacts before you think. A Taurus Moon calms down with good food and routine, while a Gemini Moon calms down by talking it through. It also stands for the mother and for how you were cared for.
Why it matters
If the Sun is what you aim for, the Moon is how you behave on a bad day. People often recognize their Moon sign faster than their Sun, because it describes the private version of them.
Try it
Look up your Moon sign, then write down the last three things you did to feel better after a hard day. If they fit the sign, use the one that worked best on purpose next time.
Common mistake
Assuming a birth date alone settles it. On a day the Moon changes sign, a chart with no birth time cannot say which of two Moon signs is yours, and the two are rarely alike.

Mercury

How you think, talk, learn and make sense of things. Its sign shows your style of mind.
What it is
Mercury is the planet closest to the Sun, and from Earth it never strays more than about 28° from it. So your Mercury is always in your Sun sign or one of the two signs beside it. It turns retrograde three or four times a year.
What it stands for
Astrologers read Mercury as the mind and the messenger: speech, writing, learning, trade and short trips. Mercury in Aries thinks fast and blurts it out, while Mercury in Capricorn thinks in plans and says less. It also covers siblings, neighbors and daily errands.
Why it matters
Mercury explains how you take in information and how other people hear you. Two people can agree on everything and still clash because one thinks out loud and the other needs to think first.
Try it
Find your Mercury sign and notice how you like to learn something new: by reading, talking, doing or watching. Use that method for the next thing you need to learn this week.
Common mistake
Blaming every missed email on Mercury retrograde. In a birth chart, Mercury’s sign and aspects matter far more, and about one person in five is born with Mercury retrograde and thinks just fine.

Venus

What you love, what you find beautiful, and how you attract and keep people and money.
What it is
Venus never moves more than about 47° from the Sun, so it always sits within two signs of your Sun sign. It spends roughly four weeks in each sign and turns retrograde about every nineteen months for around six weeks.
What it stands for
Astrologers read Venus as love, pleasure, taste, harmony and the money you earn by being liked. Venus in Scorpio loves all or nothing and wants loyalty proven, while Venus in Aquarius wants a partner who is also a friend and gives plenty of space. It rules Taurus and Libra.
Why it matters
Venus shows what makes you feel valued, which is often different from what you think you want on paper. It explains your type, your style, and why some gifts land while others fall flat.
Try it
Find your Venus sign and recall the last time you felt properly appreciated. If it matches the sign, tell one person close to you, in one sentence, what makes you feel loved.
Common mistake
Reading Venus only as romance. It also covers friendship, money, art and comfort, so a strong Venus can show up as good taste or a knack for deals as easily as a busy love life.

Mars

Your drive: how you go after what you want, how you compete and how you get angry.
What it is
Mars takes about two years to go around the zodiac, spending around six weeks in most signs. Every two years or so it turns retrograde for two to three months and can then stay in one sign for half a year.
What it stands for
Astrologers read Mars as action, courage, desire, conflict and the body at work. Mars in Taurus is slow to start and impossible to stop, while Mars in Libra fights for fairness and hates open conflict. It rules Aries and, traditionally, Scorpio.
Why it matters
Mars shows how you get things done and what happens when you are blocked. Its house points to where you push hardest, like the 2nd house for earning or the 7th for standing up to partners.
Try it
Find your Mars sign and think about the last time you got angry. Write down what set it off and how you showed it, then decide on one cleaner way to say it next time.
Common mistake
Seeing Mars as only aggression. A blocked Mars looks like people-pleasing and stalled plans, so learning to use it often means saying no sooner, which tends to cause fewer fights, not more.

Jupiter

Where life feels generous to you: growth, luck, faith and the urge to go bigger.
What it is
Jupiter takes about twelve years to go around the zodiac, so it spends about a year in each sign. Everyone born within the same year or so shares a Jupiter sign, and its house is what makes it personal.
What it stands for
Astrologers read Jupiter as expansion, optimism, teaching, travel, belief and good fortune. Jupiter in Gemini grows through ideas and conversation, while Jupiter in Cancer grows through family and home. Traditionally it is the great benefic, the planet that helps.
Why it matters
Jupiter marks where opportunities tend to arrive and where you are most willing to take a chance. It returns to its birth position around ages 12, 24, 36 and 48, which often lines up with a fresh start.
Try it
Find Jupiter’s house in "Which parts of life this lands in". Say yes to one invitation or idea in that part of life this month, and notice how it turns out.
Common mistake
Treating Jupiter as free luck. It also stands for excess, so Jupiter in the 2nd house can bring money in and send it straight back out, and the gift works best with some limits.

Saturn

Where life asks you to work, wait and build structure. Slow and strict, and it pays off later.
What it is
Saturn takes about twenty-nine and a half years to go around the zodiac, spending roughly two and a half years in each sign. It is the slowest planet you can see with the naked eye, which is why older traditions treated it as the outer limit.
What it stands for
Astrologers read Saturn as time, rules, duty, fear, discipline and mastery. Saturn in Leo can feel shy about being seen, until years of practice turn the person into someone who performs well under pressure. It rules Capricorn and, traditionally, Aquarius.
Why it matters
Saturn shows where you feel behind or judged, and also where you can build something that lasts. Its house is often the area of life that gets easier with age.
Try it
Find Saturn’s house and write down one thing in that area you have been avoiding because it feels hard. Give it twenty minutes this week, and again next week.
Common mistake
Calling Saturn the bad planet. It slows things down so they get done properly, and many people say their Saturn area became their greatest strength by their late thirties.
Read the full article

Uranus

Where you break the rules, need freedom and meet sudden change. Its sign is shared by a generation.
What it is
Uranus takes about eighty-four years to go around the zodiac, spending around seven years in each sign. It was discovered in 1781, so it has no place in older astrology, and modern astrologers gave it rulership of Aquarius.
What it stands for
Astrologers read Uranus as surprise, rebellion, invention, technology and freedom. Its sign describes a whole generation’s urge to change things, while its house shows where you personally refuse to do it the usual way. Uranus in the 10th often looks like an unusual career or a running clash with bosses.
Why it matters
Uranus explains the area where routine makes you restless and sudden turns tend to happen. It also marks where you can be original once you stop fighting the need for change.
Try it
Find Uranus’s house and list one rule you follow there only because everyone else does. Try one small change to that rule this week and see what happens.
Common mistake
Reading its sign as personal. Everyone born within about seven years of you shares it, so look at its house and at any aspects to your Sun, Moon or rising sign for the personal part.

Neptune

Where you dream, idealize and lose clear edges. Inspiration and confusion come from the same place.
What it is
Neptune takes about 165 years to go around the zodiac, spending around fourteen years in each sign. It was found in 1846, and modern astrology gave it rulership of Pisces.
What it stands for
Astrologers read Neptune as imagination, compassion, spirituality, music, film and escape. Its house shows where you see the ideal version instead of the real one. Neptune in the 7th can describe someone who falls for a partner’s potential and later has to meet the actual person.
Why it matters
Neptune explains where you are most inspired and where you are easiest to fool, including by yourself. Knowing the area lets you enjoy the dream and still check the facts.
Try it
Find Neptune’s house and name one hope in that area you have never tested. Write down two facts that would prove it right or wrong, and go check one of them.
Common mistake
Treating Neptune as pure spirituality. It also covers avoidance, escapism and wishful thinking, so the healthiest use is often art, music or helping others, rather than waiting to be rescued.

Pluto

Where you meet power, control and big change. Things in this area tend to end so something new can start.
What it is
Pluto takes about 248 years to go around the zodiac, and because its orbit is stretched it spends anywhere from twelve to thirty years in a sign. It was found in 1930 and reclassified as a dwarf planet in 2006, which astrology ignores because what it reads is the position.
What it stands for
Astrologers read Pluto as power, intensity, secrets, crisis and rebirth. Its house shows where you never do things halfway. Pluto in the 2nd can describe someone whose money goes through big losses and bigger rebuilds.
Why it matters
Pluto points to the part of life where you feel most intense and most afraid of losing control. It is also where you can rebuild yourself completely when an old way stops working.
Try it
Find Pluto’s house and write down one thing there you hold on to out of fear. Ask yourself what you would keep if you started that area from scratch today.
Common mistake
Thinking Pluto’s demotion by astronomers changes anything here. Its position is measured as precisely as any planet’s, and since its sign is generational, the house tells you far more.

Retrograde

A planet that looks like it moves backward from Earth. Read as the same drive turned inward.
What it is
Planets never reverse. From Earth one sometimes seems to, because Earth is overtaking it or being overtaken, like a slower train that looks like it slides backward from a faster one. Astrology reads that apparent reversal as a change in how the planet works.
What it stands for
Astrologers read a retrograde planet in a birth chart as turned inward: the same drive, used privately or on a second pass. Venus retrograde can describe someone who takes years to trust their own taste and then has a very personal one.
Why it matters
It shows which parts of you work best when you reflect first and act later. About one chart in five has Mercury retrograde, so it is a common feature and no curse.
Try it
Check "Every placement, in detail" for planets marked retrograde. For each one, ask where you rework things in private before you show anyone, and give yourself that extra round on purpose.
Common mistake
Bringing the panic from Mercury retrograde headlines into the birth chart. A natal retrograde is lifelong wiring, while the headlines describe a three-week stretch of sky, and people born with one usually find it completely normal.

Signs

Element

Fire, Earth, Air or Water. Every sign has one, and the mix across your planets says more than any single sign.
What it is
The twelve signs split into four groups of three. Fire is Aries, Leo and Sagittarius; Earth is Taurus, Virgo and Capricorn; Air is Gemini, Libra and Aquarius; Water is Cancer, Scorpio and Pisces. Counting your planets by element gives you a mix.
What it stands for
Astrologers read Fire as action and enthusiasm, Earth as practical results, Air as ideas and connection, and Water as feeling and memory. Someone with six planets in Air works through life by thinking and talking about it, whatever their Sun sign says.
Why it matters
It is the fastest honest read of a whole chart. A missing element often speaks louder than a full one, because it marks what you keep having to learn on purpose.
Try it
Open "The shape of the whole chart" and find your strongest and weakest element. Pick one small habit from the weak one, like a walk for Earth or a journal for Water, and do it three times this week.
Common mistake
Using only your Sun sign’s element. A Fire Sun in a chart that is mostly Water reads as a watery chart, and calling it fiery gets the person wrong in a way they notice at once.
Read the full article

Modality

Cardinal, Fixed or Mutable: whether a sign starts things, keeps them going or adapts to change.
What it is
The twelve signs also split three ways by how they act. Aries, Cancer, Libra and Capricorn are Cardinal; Taurus, Leo, Scorpio and Aquarius are Fixed; Gemini, Virgo, Sagittarius and Pisces are Mutable. Each season starts with a Cardinal sign and ends with a Mutable one.
What it stands for
Astrologers read Cardinal as the starter, Fixed as the keeper and Mutable as the adapter. A Fixed-heavy chart finishes what others give up on but hates being rushed, and a Mutable-heavy chart handles chaos well but struggles to commit.
Why it matters
Element says what you are made of, and modality says what you do when something happens. It often predicts how you handle pressure better than your Sun sign does.
Try it
Check "The shape of the whole chart" for your strongest modality. If it is Cardinal, finish one started project this week; if Fixed, start one small new thing; if Mutable, stick to one plan for seven days.
Common mistake
Hearing Fixed as stubborn and Mutable as flaky. Fixed finishes what nobody else had the patience for, and Mutable survives conditions that would break a rigid plan.
Read the full article

Aries

The first sign: Fire, Cardinal, ruled by Mars. Direct, brave and fast to start, with little patience for waiting.
What it is
In the Western zodiac the Sun is in Aries from about March 21 to April 19. Aries covers 0° to 30° and opens the zodiac at the spring equinox. It is a Fire sign of the Cardinal mode, and its ruler is Mars.
What it stands for
Astrologers read Aries as the spark: courage, independence and first moves. A planet in Aries acts on instinct and wants to be first. Moon in Aries flares up fast and forgets fast, like the friend who shouts, then offers you a snack ten minutes later.
Why it matters
Any planet in Aries works quickly and directly, and the house that holds Aries is where you start things on impulse. In the old body map Aries rules the head.
Try it
Find which planets and which house sit in Aries in "Every placement, in detail". Pick one thing in that area you keep postponing and do the first five minutes of it today.
Common mistake
Reading Aries as only angry or selfish. The same drive makes someone the first to help in a crisis, and the real weak spot is finishing, far more than temper.

Taurus

The second sign: Earth, Fixed, ruled by Venus. Steady, sensual and loyal, and very hard to rush.
What it is
The Sun is in Taurus from about April 20 to May 20. Taurus covers 30° to 60° of the zodiac. It is an Earth sign of the Fixed mode, ruled by Venus, and in the old body map it rules the throat and neck.
What it stands for
Astrologers read Taurus as comfort, money, the body and things that last. A planet in Taurus likes to go slowly and enjoy the process. Mars in Taurus is the worker who takes forever to start and then cannot be stopped.
Why it matters
The house holding Taurus shows where you want security and are slow to change. Planets there build value over time, so patience in that area tends to pay off in money or skill.
Try it
Find the house that holds Taurus. Spend money or time on one thing there that will still be useful in a year, and skip one quick fix you would normally reach for.
Common mistake
Calling Taurus lazy. It paces itself, and its strength shows when everyone else has quit and it is still going.

Gemini

The third sign: Air, Mutable, ruled by Mercury. Curious, quick and social, with a mind that wants variety.
What it is
The Sun is in Gemini from about May 21 to June 20. Gemini covers 60° to 90° of the zodiac. It is an Air sign of the Mutable mode, ruled by Mercury, and its symbol is the twins.
What it stands for
Astrologers read Gemini as talk, learning, wit, siblings, short trips and doing two things at once. A planet in Gemini wants information and variety. Venus in Gemini falls for the person who can keep a conversation going until 2 a.m.
Why it matters
The house holding Gemini is where you learn by asking and where you get bored fastest. Planets there need mental stimulation, or they get restless and scattered.
Try it
Find the house that holds Gemini and pick one question about that area you have never asked anyone. Ask it out loud to two different people this week and compare their answers.
Common mistake
Calling Gemini two-faced. It holds two views at once because it can see both, and its real challenge is picking one and following through.

Cancer

The fourth sign: Water, Cardinal, ruled by the Moon. Protective, caring and tied to home and family.
What it is
The Sun is in Cancer from about June 21 to July 22, starting at the summer solstice in the Northern Hemisphere. Cancer covers 90° to 120° of the zodiac. It is a Water sign of the Cardinal mode, ruled by the Moon.
What it stands for
Astrologers read Cancer as home, family, food, memory and the urge to protect. A planet in Cancer works through care and loyalty, with a hard shell over a soft center. Mercury in Cancer remembers how a conversation felt long after it forgets the words.
Why it matters
The house holding Cancer is where you need to feel safe before you can act. Planets there take things personally, which makes them caring and also easy to hurt.
Try it
Find the house that holds Cancer and ask what would make that part of life feel safer. Then do one small thing toward it, such as a call home or a cleared shelf.
Common mistake
Seeing Cancer as weak because it is emotional. It is Cardinal, so it leads, and it often runs the family, the team or the kitchen with a firm hand.

Leo

The fifth sign: Fire, Fixed, ruled by the Sun. Warm, proud and creative, and it wants to be seen.
What it is
The Sun is in Leo from about July 23 to August 22. Leo covers 120° to 150° of the zodiac. It is a Fire sign of the Fixed mode, ruled by the Sun, and in the old body map it rules the heart and back.
What it stands for
Astrologers read Leo as pride, play, romance, children and creative self-expression. A planet in Leo wants an audience and gives warmth in return. Moon in Leo needs to feel special, like the child who asks you to watch every single dive into the pool.
Why it matters
The house holding Leo is where you want recognition and where you shine once you get it. Planets there do their best work in front of someone, even an audience of one.
Try it
Find the house that holds Leo. Show one piece of work or one idea from that area to someone this week instead of keeping it private, and notice how it feels.
Common mistake
Reading Leo as vain. Its need for attention usually comes with real generosity, and a Leo who is ignored tends to shrink, which looks more like shyness than ego.

Virgo

The sixth sign: Earth, Mutable, ruled by Mercury. Careful, useful and precise, always improving something.
What it is
The Sun is in Virgo from about August 23 to September 22. Virgo covers 150° to 180° of the zodiac. It is an Earth sign of the Mutable mode, ruled by Mercury, and its symbol is the maiden holding a sheaf of wheat.
What it stands for
Astrologers read Virgo as skill, service, health, routine and an eye for what is wrong. A planet in Virgo wants to be useful and gets anxious when things are messy. Venus in Virgo shows love by fixing your bike instead of saying it.
Why it matters
The house holding Virgo is where you notice details others miss and where you can be hardest on yourself. Planets there improve with a routine more than with inspiration.
Try it
Find the house that holds Virgo and pick one small system to improve there, like a checklist or a set time each day. Run it for one week, then keep only what helped.
Common mistake
Calling Virgo a neat freak. Plenty of Virgos have messy rooms, because the trait is about analysis and usefulness, and their order often lives in their head.

Libra

The seventh sign: Air, Cardinal, ruled by Venus. Fair, social and drawn to balance and good partners.
What it is
The Sun is in Libra from about September 23 to October 22, starting at the autumn equinox in the Northern Hemisphere. Libra covers 180° to 210° of the zodiac. It is an Air sign of the Cardinal mode, ruled by Venus.
What it stands for
Astrologers read Libra as partnership, fairness, beauty, diplomacy and the scales. A planet in Libra works through other people and wants things to be even. Mars in Libra argues hard, mostly on behalf of someone treated unfairly.
Why it matters
The house holding Libra is where you prefer to decide together and where you weigh options for a long time. Planets there grow through relationships and suffer in open conflict.
Try it
Find the house that holds Libra and name one decision there you keep putting off to keep the peace. Set a deadline, list two options, and choose one by then.
Common mistake
Calling Libra indecisive and leaving it there. Libra is Cardinal and starts things, so once it has weighed both sides it can move very fast.

Scorpio

The eighth sign: Water, Fixed, ruled by Pluto and traditionally Mars. Intense, private and all-or-nothing.
What it is
The Sun is in Scorpio from about October 23 to November 21. Scorpio covers 210° to 240° of the zodiac. It is a Water sign of the Fixed mode, with Pluto as its modern ruler and Mars as its traditional one.
What it stands for
Astrologers read Scorpio as intensity, trust, secrets, sex, shared money and rebirth. A planet in Scorpio wants the truth and gives total loyalty or none. Moon in Scorpio is the friend who notices you are upset before you have said a word.
Why it matters
The house holding Scorpio is where you feel things most strongly and where trust takes longest. Planets there go through big endings and comebacks over a lifetime.
Try it
Find the house that holds Scorpio and write down one thing there you have never told anyone. You do not need to share it; just notice how much effort keeping it costs you.
Common mistake
Reducing Scorpio to jealousy and revenge. Its main trait is loyalty under pressure, and Scorpio placements often make the best friends to have in a real crisis.

Sagittarius

The ninth sign: Fire, Mutable, ruled by Jupiter. Honest, restless and hungry for meaning and travel.
What it is
The Sun is in Sagittarius from about November 22 to December 21. Sagittarius covers 240° to 270° of the zodiac. It is a Fire sign of the Mutable mode, ruled by Jupiter, and its symbol is the archer.
What it stands for
Astrologers read Sagittarius as travel, philosophy, higher learning, faith and blunt honesty. A planet in Sagittarius wants the big picture and room to roam. Mercury in Sagittarius tells the truth a little too fast, then laughs it off.
Why it matters
The house holding Sagittarius is where you need room to explore and where rules feel too small. Planets there grow through study, travel or a belief worth living by.
Try it
Find the house that holds Sagittarius and plan one small adventure there, like a class, a new route or a book outside your usual topics. Do it within the next two weeks.
Common mistake
Seeing Sagittarius as only fun-loving. It is the sign of serious questions about meaning, and many Sagittarius placements end up teaching or writing.

Capricorn

The tenth sign: Earth, Cardinal, ruled by Saturn. Ambitious, patient and serious about building something real.
What it is
The Sun is in Capricorn from about December 22 to January 19, starting at the winter solstice in the Northern Hemisphere. Capricorn covers 270° to 300° of the zodiac. It is an Earth sign of the Cardinal mode, ruled by Saturn.
What it stands for
Astrologers read Capricorn as career, status, responsibility, time and long climbs. A planet in Capricorn plans ahead and respects results. Venus in Capricorn falls for competence and shows love by turning up on time, every time.
Why it matters
The house holding Capricorn is where you take things seriously and expect to work hard. Planets there often start slow in youth and get stronger with age.
Try it
Find the house that holds Capricorn and set one goal there for twelve months from now. Break it into four steps, and put the first one in your calendar this week.
Common mistake
Calling Capricorn cold. It holds back feeling until trust is earned and its humor is famously dry, so its warmth shows through actions more than words.

Aquarius

The eleventh sign: Air, Fixed, ruled by Uranus and traditionally Saturn. Independent, inventive and group-minded.
What it is
The Sun is in Aquarius from about January 20 to February 18. Aquarius covers 300° to 330° of the zodiac. It is an Air sign of the Fixed mode, with Uranus as its modern ruler and Saturn as its traditional one.
What it stands for
Astrologers read Aquarius as friendship, groups, ideals, technology and the future. A planet in Aquarius thinks for itself and stands slightly apart from the crowd. Moon in Aquarius cares about people in general and can feel awkward when one person cries in front of them.
Why it matters
The house holding Aquarius is where you want to do things your own way and where you connect through shared ideas. Planets there often find their people in groups, clubs or online communities.
Try it
Find the house that holds Aquarius and look for one group, club or online community tied to that area. Join it, or post one honest idea in it, this week.
Common mistake
Calling Aquarius cold because it values distance. It is Fixed, so it stays loyal to its friends and its principles, and it shows care by standing up for people.

Pisces

The twelfth sign: Water, Mutable, ruled by Neptune and traditionally Jupiter. Gentle, imaginative and very open to others.
What it is
The Sun is in Pisces from about February 19 to March 20. Pisces covers 330° to 360°, the last stretch of the zodiac before Aries starts again. It is a Water sign of the Mutable mode, ruled by Neptune in modern astrology and by Jupiter in the old system.
What it stands for
Astrologers read Pisces as compassion, art, dreams, spirituality and letting go. A planet in Pisces picks up the mood of the room and blends with it. Mars in Pisces fights for the underdog and can struggle to fight for itself.
Why it matters
The house holding Pisces is where your boundaries are softest and your imagination is strongest. Planets there do well with creative work, quiet time and clear limits on what they take on.
Try it
Find the house that holds Pisces and set one boundary there, such as a time you stop answering messages. Keep it for a week and use the freed-up time for something creative.
Common mistake
Seeing Pisces as weak or lost. Its openness is a skill, and Pisces placements are often the ones who can read a room and calm it before anyone else spots a problem.

Houses

House

One of twelve slices of your chart, each covering an area of life such as money, home, work or love.
What it is
The chart splits into twelve houses, each tied to part of life: the 1st is self and body, the 4th home, the 7th partners and the 10th career. This app uses whole-sign houses by default, so each house is one sign, counted from your rising sign.
What it stands for
Astrologers read the planets as the actors, the signs as their style and the houses as the stage. Mars in Aries is a competitive streak in the 6th house of daily work, and a combative marriage in the 7th.
Why it matters
Houses are what make two people with almost the same planets live different lives. Without houses a chart describes a personality; with them it describes where that personality shows up.
Try it
Open "Which parts of life this lands in" and find the house with the most planets. Write down what that part of life has asked of you in the past year.
Common mistake
Expecting houses without a birth time. They turn a full circle every day, so an hour of error moves most of a chart, which is why this app leaves houses out until it has your time.
Read the full article

Cusp

The boundary between two signs or two houses. A planet sitting near one is right at the edge of both.
What it is
The line where one sign or house ends and the next begins. A planet within a degree or so of one sits right at the edge, so a small change in birth time or house system can move it across.
Why it matters
Cusps are where small errors turn into big ones. A birth time twenty minutes off can slide a planet into another house, which is the best reason to use a time from a birth record over one from memory.
Try it
Switch the house system on your Western chart and watch which planets change house. Those planets sit near a cusp, so read both houses and see which one fits your life better.
Common mistake
The magazine idea of being "born on the cusp" and so half of each Sun sign. The Sun is always in one sign or the other; what is real is a planet near a house cusp, which is a different thing.
Read the full article

Angular

A planet in the 1st, 4th, 7th or 10th house. These sit on the chart’s corners and are the most visible.
What it is
The 1st, 4th, 7th and 10th houses sit on the four corners of the chart, where the horizon and the meridian cross it, and planets there are called angular. Houses 2, 5, 8 and 11 are succedent, and 3, 6, 9 and 12 are cadent.
What it stands for
Astrologers read angular planets as loud and public. A planet in the 1st is what you seem like within a minute of meeting you, and one in the 10th is what you end up known for.
Why it matters
Angular planets are the ones other people notice first, so they explain your reputation. The same planet in a cadent house is just as real and mostly private.
Try it
Check "Which parts of life this lands in" for planets in houses 1, 4, 7 or 10. Ask two friends what they notice first about you and compare it with those planets.
Common mistake
Reading it as importance instead of volume. A cadent planet is a private one, and a reading that follows only the loud planets describes the public version of a person.
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1st House

You: your body, your look and the first impression you make. It starts at your rising sign.
What it is
The 1st house is the sign that was rising on the eastern horizon when you were born. With whole-sign houses the entire rising sign is your 1st house. It is angular, and its natural sign is Aries.
What it stands for
Astrologers read the 1st house as self, body, health, style and how you start things. A planet here colors your whole manner. Saturn in the 1st can make someone look serious at twenty and oddly young at sixty.
Why it matters
The 1st house describes how you meet the world before anyone knows you. Its sign and planets also shape your stamina and the way you react to new situations.
Try it
Find your 1st-house sign and any planets in it. Ask someone who met you recently what they first thought of you, and compare it with what this house says.
Common mistake
Thinking the 1st house is only about looks. It covers your whole approach to life, including how you handle fresh starts, which matters far more than appearance.
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2nd House

Money, possessions and self-worth: what you earn, what you own and what you value.
What it is
The 2nd house is the sign after your rising sign. It is succedent, its natural sign is Taurus, and older astrology called it the house of livelihood.
What it stands for
Astrologers read the 2nd house as income, savings, possessions, skills you can sell and your sense of worth. Jupiter here often earns well and spends freely, while Saturn here builds money slowly and worries about it.
Why it matters
It shows how you make money and what makes you feel secure. It also ties money to self-worth, which explains why some people undercharge no matter how skilled they are.
Try it
Find your 2nd-house sign and planets. Write down your biggest spends from last month and check whether they match what this house says you value.
Common mistake
Reading an empty 2nd house as no money. An empty house only means no planet sits there, and you read it through its sign and the planet that rules that sign.
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3rd House

Your everyday mind: talk, writing, siblings, neighbors, short trips and early schooling.
What it is
The 3rd house is the third sign counted from your rising sign. It is cadent, and its natural sign is Gemini. In Hellenistic astrology it was the house where the Moon rejoiced, called the house of the Goddess.
What it stands for
Astrologers read the 3rd house as communication, learning, brothers and sisters, your neighborhood and daily errands. Mars here argues fast and drives fast, while Venus here charms with words and often loves a good text thread.
Why it matters
It shows how you speak, write and pick up new skills. It also describes your bond with siblings, which often shapes how you deal with peers for life.
Try it
Find your 3rd-house sign and planets. Send one message you have been putting off, or start a short course, then notice whether the sign describes how you went about it.
Common mistake
Treating it as minor because it is cadent. For writers, teachers, salespeople and anyone who talks for a living, the 3rd house is often the busiest part of the chart.
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4th House

Home, family, roots and your private life. The base everything else in the chart stands on.
What it is
The 4th house is the fourth sign from your rising sign, at the bottom of the chart. It is angular, and its natural sign is Cancer. The point called the IC usually sits in or near it.
What it stands for
Astrologers read the 4th house as home, parents, ancestry, property and the end of life. Moon here needs a real nest to feel okay, while Uranus here often describes many moves or an unusual family.
Why it matters
It shows what you need at home to recharge and what you carry from your family. Trouble here tends to leak into every other area, so it explains a lot about stress.
Try it
Find your 4th-house sign and planets. Change one thing at home this week that would make it feel more like yours, even something small like a lamp or a shelf.
Common mistake
Assuming the 4th house always means your mother. Traditions disagree about which parent it shows, so read it as the home you grew up in and the one you build.
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5th House

Fun, romance, creativity and children: what you do for joy, with no other reason needed.
What it is
The 5th house is the fifth sign from your rising sign. It is succedent, its natural sign is Leo, and older texts called it the house of good fortune.
What it stands for
Astrologers read the 5th house as play, dating, art, hobbies, risk-taking and children. Mercury here loves word games and witty flirting, while Saturn here may treat fun like a job until it learns to relax.
Why it matters
It shows what makes you feel alive outside work and duty. A neglected 5th house often shows up as burnout, even when everything else in life looks fine.
Try it
Find your 5th-house sign and planets. Book one hour this week for something you do only because you enjoy it, and do it without trying to get better at it.
Common mistake
Reading it only as children. It covers all creative output, so people without kids often meet their 5th house through art, projects, sport or dating.
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6th House

Daily work, routines, health habits and service: how you handle the to-do list.
What it is
The 6th house is the sixth sign from your rising sign. It is cadent, its natural sign is Virgo, and traditional astrology linked it to illness, servants and small animals.
What it stands for
Astrologers read the 6th house as job tasks, coworkers, routines, diet, exercise and pets. Jupiter here likes a busy, generous workplace, while Mars here works fast and gets annoyed by slow colleagues.
Why it matters
It shows the daily habits that keep your body and your work in order. Many health and job complaints trace back to a 6th house that is being ignored.
Try it
Find your 6th-house sign and planets. Change one routine for seven days, like a bedtime or a lunch break away from your desk, and note how your week feels.
Common mistake
Treating it as your career. The 6th house is the daily grind and the 10th is your public role, so someone can love their career and still hate their daily routine.
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7th House

Partners: marriage, close one-to-one relationships, business partners and open rivals.
What it is
The 7th house is the sign opposite your rising sign, where the Sun sets. It is angular, and its natural sign is Libra. Under whole-sign houses the Descendant always falls in it.
What it stands for
Astrologers read the 7th house as committed partners, contracts, clients and the people you openly compete with. Venus here wants a partner who makes life pleasant, while Pluto here can draw intense partners who change you.
Why it matters
It shows what you look for in others and, often, the traits you have not owned yet in yourself. That is why people keep meeting the same type until they understand it.
Try it
Find your 7th-house sign. List the traits your past partners or closest friends shared, then check how many of them fit that sign.
Common mistake
Reading the 7th house as only marriage. It covers any serious one-to-one bond, including business partners, so single people live it every day too.
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8th House

Shared money, intimacy, debt, inheritance and big endings. What you share and what you lose.
What it is
The 8th house is the eighth sign from your rising sign. It is succedent, its natural sign is Scorpio, and traditional astrology called it the house of death.
What it stands for
Astrologers read the 8th house as joint finances, loans, taxes, inheritance, sex, trust and crisis. Jupiter here can do well with other people’s money, while the Moon here feels everything and shows very little.
Why it matters
It shows how you handle merging with someone, in money and in emotion. It also explains how you cope with loss and how you come back from it.
Try it
Find your 8th-house sign and planets. Review one shared money matter, like a debt, a joint account or an insurance policy, and make one decision about it this month.
Common mistake
Fearing it because of the word death. In a birth chart it rarely points to physical death; it describes endings, change and what you share with others.
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9th House

Travel, higher education, beliefs and big ideas: where you go to see further.
What it is
The 9th house is the ninth sign from your rising sign. It is cadent, and its natural sign is Sagittarius. In Hellenistic astrology it was the house where the Sun rejoiced, called the house of the God.
What it stands for
Astrologers read the 9th house as long trips, universities, religion, philosophy, law, publishing and teachers. Mercury here loves to study and argue ideas, while Saturn here may doubt every faith until it builds its own.
Why it matters
It shows what gives your life meaning and how you widen your view. A strong 9th house often points to study, travel or teaching as a turning point.
Try it
Find your 9th-house sign and planets. Choose one book, course or trip that would stretch how you see the world, and take the first step this week.
Common mistake
Thinking it only matters if you travel. Reading, studying and changing your mind about something big are 9th-house experiences too.
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10th House

Career, reputation and public role: what you are known for and what you aim for.
What it is
The 10th house is the tenth sign from your rising sign, at the top of the chart. It is angular, and its natural sign is Capricorn. The Midheaven often falls here, though with whole-sign houses it can land in the 9th or 11th.
What it stands for
Astrologers read the 10th house as career, status, achievement, authority and your public image. The Sun here wants to lead and be recognized, while Neptune here may drift between careers until it finds one with real meaning.
Why it matters
It shows the kind of work and reputation that feels right for you. It also describes how you deal with bosses and how you handle being in charge.
Try it
Find your 10th-house sign and planets. Write one sentence about what you want to be known for in five years, and compare it with what this house describes.
Common mistake
Reading an empty 10th house as no career. It only means no planet sits there; its sign and the planet ruling that sign still describe your working life.
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11th House

Friends, groups, networks and hopes for the future. The people you build your future with.
What it is
The 11th house is the eleventh sign from your rising sign. It is succedent, and its natural sign is Aquarius. Older texts called it the house of the good spirit, tied to allies and gains.
What it stands for
Astrologers read the 11th house as friendships, communities, causes, patrons and long-term wishes. Venus here makes friends easily and often meets partners through them, while Saturn here keeps a small circle of old, trusted friends.
Why it matters
It shows where support comes from and the role you play in groups. It also points to the goals you hold for the long run, beyond the daily grind.
Try it
Find your 11th-house sign and planets. Reach out this week to one friend or contact you have lost touch with, and mention one goal you are working on.
Common mistake
Treating friends as less important than partners or career. Many charts show the biggest openings arriving through the 11th house, from someone who knows someone.
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12th House

Solitude, rest, hidden fears and what goes on behind the scenes. The quiet end of the chart.
What it is
The 12th house is the sign just before your rising sign. It is cadent, its natural sign is Pisces, and traditional astrology called it the house of the bad spirit, tied to hidden enemies and confinement.
What it stands for
Astrologers read the 12th house as rest, retreat, secrets, dreams, hospitals, the unconscious and self-sabotage. Mars here may hide its anger until it bursts, while Jupiter here is often called a hidden protector that helps quietly.
Why it matters
It shows what you need time alone for and what you avoid looking at. Planets here can feel invisible to you until someone points them out.
Try it
Find your 12th-house sign and planets. Book thirty minutes alone with no phone this week, and write down whatever comes up about that planet’s theme.
Common mistake
Fearing planets in the 12th. They often work best in private, creative or caring work, and many artists and nurses have busy 12th houses.
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Aspects

Aspect

The angle between two planets. Five angles count, and each one says how those two parts of you get along.
What it is
Measure the angle between two planets around the chart circle. Five angles count: 0°, 60°, 90°, 120° and 180°. Planets rarely hit them exactly, so each angle gets a margin of a few degrees, called the orb.
What it stands for
Each planet stands for one part of you, like Mars for drive or the Moon for feelings. Astrologers read the aspect as the way those two parts deal with each other: they merge, help, argue or pull apart.
Why it matters
Signs describe each planet on its own, and aspects describe how they behave together. That is where a chart starts to sound like one specific person instead of a twelfth of everybody.
Try it
Open your Western chart at "Where your chart argues with itself" and find the aspect with the smallest orb. Write down the two planets, then look for that pair in one decision you made this month.
Common mistake
Assuming the tense aspects are the bad ones. Squares and oppositions bring the pressure that makes people put in effort, while the easy aspects are often gifts you forget you have.
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Conjunction (0°)

Two planets at the same spot in your chart, within 8°. Their two jobs fuse and act as one.
What it is
A conjunction is an angle of 0°: two planets side by side in the zodiac. This app counts it within 8°, or 10° when the Sun or Moon is one of them. The two usually share a sign, so they also share a house.
What it stands for
Astrologers read it as a merger. Venus with Mars mixes affection and desire, so attraction and action arrive together. Saturn with the Moon puts a rule on every feeling, like the person who checks whether they are allowed to be upset before they let themselves feel it.
Why it matters
A conjunction is the loudest note in a chart because the two planets cannot be switched on separately. When one shows up in your life, the other comes with it.
Try it
Look for a conjunction in "Where your chart argues with itself". Write the two planets as one phrase, like "careful love" for Saturn with Venus, and check where that phrase fits your last relationship.
Common mistake
Calling every conjunction easy because nothing pulls against it. Two planets that want different things, like Mars and Neptune, can blur each other, so ask whether the pair agrees before you count it as a help.
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Sextile (60°)

Two planets 60° apart. An easy link that becomes a talent once you start using it.
What it is
A sextile is an angle of 60°, one sixth of the chart circle. This app counts it within 6°, the tightest orb of the five. The two planets usually sit in signs of friendly elements, such as fire and air, or earth and water.
What it stands for
Astrologers read a sextile as an open door. Mercury sextile Jupiter is the person who explains big ideas well, but only once someone hands them the stage. Nothing about it pushes you, so it works like a skill you have to practice.
Why it matters
Sextiles point to strengths that are cheap to build. They are often the fastest wins in a chart, because the ability is already there and only needs a habit around it.
Try it
Find a sextile in your aspect list and name the skill the two planets suggest. Then do one small thing with it this week, like sending the pitch you keep rewriting.
Common mistake
Expecting a sextile to work on its own like a trine. It needs effort to start, so people with strong sextiles often have talents nobody has seen yet, including themselves.
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Square (90°)

Two planets 90° apart. Two parts of you want different things, and the friction pushes you to act.
What it is
A square is an angle of 90°, a quarter of the chart circle. This app counts it within 7°, or 8° with the Sun or Moon. The two planets usually sit in signs of the same modality, like Aries and Cancer, which both want to start things in different directions.
What it stands for
Astrologers read a square as an inner argument that never fully settles. Mars square Saturn is the person who wants to move now and hears a voice saying "not yet", so they swing between rushing and stalling. Over the years that friction turns into skill, because they practice the hard part more than anyone.
Why it matters
Squares are where a chart explains your repeating problems. They often mark the area where you work hardest and, later in life, where you get the most done.
Try it
Pick the square with the smallest orb in your aspect list. Next time you feel stuck between two choices, ask whether it is those two planets arguing, and write down which one won.
Common mistake
Reading a square as bad luck. It describes pressure, and pressure is what makes people put in effort, so a chart with no squares often belongs to someone who never had to push.
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Trine (120°)

Two planets 120° apart. Two parts of you work together so easily that you barely notice it.
What it is
A trine is an angle of 120°, a third of the chart circle. This app counts it within 8°, or 10° with the Sun or Moon. The two planets usually share an element, such as Taurus and Virgo, which are both earth signs.
What it stands for
Astrologers read a trine as flow. Moon trine Venus is the person who puts a room at ease without trying and is surprised when people thank them for it. It describes what you do well even on a bad day.
Why it matters
Trines show your easiest strengths, the ones you can lean on under stress. Because they cost you nothing, they are also the ones you are most likely to undervalue or never charge for.
Try it
Find your tightest trine, then ask a friend what you make look easy. If their answer matches the two planets, put that strength to work on purpose this month.
Common mistake
Assuming more trines means a better life. Too much ease can mean too little push, so a trine pays off most when a square or an opposition gives you a reason to use it.
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Opposition (180°)

Two planets 180° apart, facing each other across your chart. Two needs pull you in opposite directions.
What it is
An opposition is an angle of 180°, half the chart circle. This app counts it within 8°, or 10° with the Sun or Moon. The two planets sit in opposite signs, like Leo and Aquarius, which form a natural pair.
What it stands for
Astrologers read an opposition as a seesaw. Sun opposite Moon is the person torn between what they want and what they need, who leans hard one way and then swings back. It often shows up through other people, who seem to play the side you pushed away.
Why it matters
Oppositions explain patterns in relationships, because you tend to meet the far end of the pair in a partner or a boss. Once you can see both ends, the swings get shorter.
Try it
Find an opposition in your aspect list and write the two planets as two needs, like "freedom" and "closeness". Then think of your last argument and check which need each side was defending.
Common mistake
Thinking you have to pick one side. The work is to give both needs a place, like fixed time alone each week so closeness stops feeling like a trap.
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Orb

How far an aspect is from exact, in degrees. The smaller the orb, the stronger it reads; under 1° is very tight.
What it is
Aspects are rarely exact. A square is 90°, but two planets 87° apart still count as a square that is 3° off, and that 3° is the orb. This app allows 6° to 8° depending on the aspect, and a little more with the Sun or Moon.
Why it matters
The orb is how a chart ranks itself. A list of nineteen aspects sorted by orb tells you which three describe the person, and anything under 1° is close to a defining trait.
Try it
In "Where your chart argues with itself", look at the three aspects with the smallest orbs. Read those first and leave the rest until those three make sense to you.
Common mistake
Treating every aspect in the list as equally true. A 0.3° square is a structural fact and a 7° square is a footnote, and reading them at the same volume makes a chart sound like it says everything.
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Applying

An aspect still closing toward exact, as opposed to one moving away from it. Traditionally read as stronger.
What it is
An aspect is applying while the faster planet is still moving toward the exact angle, and separating once it has passed it. Two planets at the same 3° orb can be either, depending only on which way they are traveling.
Why it matters
Applying aspects are read as still building, so what they describe has not fully happened yet. Separating aspects are read as already worked through, like a debt you have paid next to one that is still coming due.
Try it
Take the tightest aspect in your list and note which planet is faster: the Moon, then Mercury, Venus, the Sun and Mars. Ask whether that pair feels like something you are still learning or something you already know.
Common mistake
Reading the orb and ignoring the direction. Two charts can show the same 2° Saturn square and mean different things: in one the pressure is still building, in the other someone has already been through it.
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Points

Ascendant

The sign rising in the east when you were born. It changes about every two hours, so it needs an exact time.
What it is
The exact degree of the zodiac coming up over the eastern horizon at your birth time and place, also called the rising sign. The sky turns once a day, so the Ascendant moves through all twelve signs in twenty-four hours.
What it stands for
Astrologers read the Ascendant as your first impression, your body and your default way of starting things. A Capricorn rising can seem serious and reserved at first, even when the Sun sign underneath is a chatty Gemini.
Why it matters
It sets the whole house layout, because the rising sign becomes the 1st house and the rest follow in order. A wrong Ascendant moves every planet into the wrong area of life.
Try it
Find your rising sign at the top of your Western chart. Ask a new coworker or acquaintance for three words that describe their first impression of you, and compare.
Common mistake
Guessing a birth time to get one. "Sometime in the morning" can produce three or four different rising signs, and a wrong Ascendant is worse than none because everything built on it is confidently wrong.

Descendant

The point opposite your rising sign, where the sky was setting. It describes what you look for in partners.
What it is
The degree setting on the western horizon at your birth, always exactly opposite the Ascendant. With whole-sign houses it always falls in your 7th house, so with Aries rising your Descendant is in Libra.
What it stands for
Astrologers read the Descendant as the qualities you look for in others, often the ones you do not show yourself. A Leo rising who loves the spotlight often ends up with a cool, independent, Aquarius-style partner who is not impressed by drama.
Why it matters
It explains your type in relationships and why some people feel magnetic to you. It also shows traits you can grow into once you stop handing them to partners.
Try it
Your Descendant is the sign opposite your rising sign. Write down which of its traits you admire in other people, then try one of them yourself this week.
Common mistake
Thinking your partner must have their Sun in your Descendant sign. It describes a style of person, and that style can show up through their Moon, their rising sign or simply how they behave.

Midheaven (MC)

The highest point of the zodiac at your birth. Read as your public direction, career and reputation.
What it is
The Midheaven, or MC, is the degree of the zodiac at the top of the sky when you were born. Like the Ascendant it needs an exact birth time, and with whole-sign houses it can land in your 9th, 10th or 11th house.
What it stands for
Astrologers read the Midheaven as your aims, your public role and what you become known for. A Midheaven in Aries points to work that needs initiative, while one in Pisces suits art, care or helping people.
Why it matters
It describes the direction your life takes in public, which can differ from your Sun sign’s style. Planets close to it are often the most visible part of a person’s career.
Try it
Your chart here shows houses but not the Midheaven degree yet, so use your 10th house as a stand-in. Write down the job you wanted at ten years old and compare it with your 10th-house sign.
Common mistake
Treating it as identical to the 10th house in every system. In Placidus they match, but with whole-sign houses the Midheaven can sit elsewhere, and that gap is worth reading.

IC (Imum Coeli)

The lowest point of the chart, opposite the Midheaven. Read as your roots, home and private foundation.
What it is
The IC, from the Latin Imum Coeli for "bottom of the sky", is the degree directly opposite the Midheaven. It needs an exact birth time and usually falls in or near the 4th house.
What it stands for
Astrologers read the IC as family background, home, ancestry and the private self you return to at night. An IC in Cancer suggests a strong pull toward family, while one in Aquarius often describes an unusual home life.
Why it matters
It shows what you need underneath your public life to feel grounded. When this part is shaky, success at work tends to feel hollow.
Try it
Use your 4th-house sign as a stand-in. Write down one habit from your childhood home that you still keep, and decide whether you still want it.
Common mistake
Ignoring it because it sits hidden at the bottom of the chart. It is one of the four angles, and planets near it often shape your whole emotional life.

Lunar nodes

The two points where the Moon’s path crosses the Sun’s. Always opposite each other, and read as a direction to grow in.
What it is
The Moon’s orbit is tilted about 5° against the Sun’s path, so the two circles cross at two points, the North and South Nodes. Eclipses only happen near them. They move backward and take about eighteen and a half years to go all the way around.
What it stands for
Astrologers read the South Node as the skills and habits you fall back on, and the North Node as the direction you avoid because it feels new. Someone with the North Node in Libra is learning to share decisions after years of going it alone.
Why it matters
The nodes name your comfort zone and your growth edge on one axis. Everyone born within about eighteen months of you shares the signs, so their houses are what make them personal.
Try it
Open "The other points" on your Western chart. Write down one South Node habit you lean on, and one small North Node step you can take this week.
Common mistake
Reading the South Node as a past life and the North Node as destiny. Neither claim can be checked, and treating the axis as fate turns a useful choice into something you can only wait for.

The whole chart

Chart signature

The one sign your whole chart resembles, from its main element and modality. Often not your Sun sign.
What it is
Count every planet by element and by modality, and take the strongest of each. That pair, such as Cardinal Air or Fixed Fire, matches one of the twelve signs, and that sign is your chart signature.
What it stands for
Astrologers read the signature as the flavor of the whole chart. A Virgo Sun with a Sagittarius signature is careful with details but restless and wide-ranging in how they live overall.
Why it matters
It answers the question a Sun sign only pretends to. The Sun is one point out of ten, while the signature sums them all up, so it often fits better than the sign you have used all your life.
Try it
Open "The shape of the whole chart" and find your signature sign. Read its entry in this glossary and mark the lines that fit you better than your Sun sign does.
Common mistake
Expecting it to match your Sun sign and thinking something broke when it does not. A mismatch is the normal case, and the gap between the two is often the most recognizable thing in a chart.
Read the full article

Stellium

Three or more planets packed into one sign or one house. One area of life ends up carrying extra weight.
What it is
Three or more planets in a single sign or a single house. There is no agreed cutoff, since some astrologers want four, but the effect is the same: an unusual share of the chart points at one place.
What it stands for
Astrologers read a stellium as a theme that will not leave the person alone. Four planets in the 6th house can describe someone whose job and routines take over their life, for better and for worse.
Why it matters
Most charts spread out, and a stellium marks the subject you keep coming back to after trying to do something else. It is often what people know you for.
Try it
Check "Every placement, in detail" for three or more planets in one sign or house. Name that area of life, then name one other area you have neglected because of it.
Common mistake
Treating it as a superpower. Focus cuts both ways, and the same weight that makes someone strong in one area usually leaves other parts of the chart running on empty.

Timing and relationships

Transit

Where a planet is right now compared with where it was at your birth. Transits are how astrology handles timing.
What it is
Your birth chart is frozen at one moment, while the planets keep moving. A transit is a moving planet forming an aspect to a point in your chart, such as Saturn reaching the degree where your Sun sat when you were born.
What it stands for
Astrologers read the moving planet as the visitor and your birth planet as the part of life being visited. Jupiter crossing your Venus tends to feel like a good season for love or money, while Saturn crossing it asks for commitment.
Why it matters
Transits answer the question "why now". The sky is the same for everyone, but it lands on different charts, which is why the same week feels different for two people.
Try it
Open My Cosmic Weather and note the sign a planet is moving into this week. Find the house in your chart that holds that sign: that is the part of life the change is visiting.
Common mistake
Reading today’s sky as if it hits everyone the same way. A headline about Mars in Leo describes the planet, and what it means for you depends on what it touches in your chart.

Saturn return

When Saturn comes back to its birth position, around ages 29 and 58. Often remembered as a time of reckoning.
What it is
Saturn takes about twenty-nine and a half years to orbit the Sun, so around ages 29 and 58 it returns to the degree it held when you were born. It lasts a year or two, because Saturn often crosses the spot three times.
What it stands for
Astrologers read Saturn as the auditor, and the return is when the accounts come due. It tends to test career, commitment and adulthood, like the 29-year-old who suddenly quits the job they took to please their parents.
Why it matters
It is one of the most widely reported experiences in astrology, and it lands right when people are expected to settle down. Knowing your dates lets you plan instead of being caught off guard.
Try it
Find Saturn’s sign and house in your chart and work out the years you turn 28 to 30. Write down one structure in that area you want built by then, or rebuilt if you are past it.
Common mistake
Waiting for a disaster on a fixed date. For people who have been building something real it often feels like a promotion, the same audit passed.
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Synastry

Two charts compared: which of your planets touch theirs, and how. Far more detailed than matching Sun signs.
What it is
Lay one chart over the other and measure the aspects between them, such as your Moon to their Mars or their Venus to your Saturn. The result is a map of where two people press on each other.
What it stands for
Astrologers read each contact as one person switching on a part of the other. Their Saturn on your Venus can feel like steady commitment or like being judged, depending on how both of you handle it.
Why it matters
It explains the specific feel of a relationship, including the argument you keep having. Two charts can look "compatible" and be dull, or full of tension and impossible to walk away from.
Try it
Open the synastry view for you and the other person and go to "Where the two charts actually touch". Find the tightest contact and ask them whether it matches how you two argue and make up.
Common mistake
Comparing two Sun signs and calling it compatibility. That uses one fact from each chart and ignores dozens, which is why so many people decide astrology does not describe their relationship.
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History and systems

Tropical zodiac

Signs measured from the spring equinox. What Western astrology uses, and why it differs from Vedic.
What it is
The zodiac Western astrology uses, counted from the spring equinox. 0° Aries is the moment the Sun crosses the celestial equator in March, and the twelve signs are twelve equal 30° spans from there.
Why it matters
It ties the signs to the seasons, which is why Aries carries the feel of early spring in the Northern Hemisphere. It is also why a Western chart and a Vedic chart disagree by about one sign.
Try it
Compare your Sun sign on the Western chart with your Sun on the Vedic chart. If they differ, read both entries and note which one fits you better.
Common mistake
Thinking the signs are meant to line up with the constellations and the drift is a mistake. Western astrology has measured from the equinox on purpose for about two thousand years.

Hellenistic astrology

The Greek-speaking astrology of roughly 100 BCE to 600 CE, where most of Western astrology’s structure began.
What it is
The astrology that grew up in the Greek-speaking Mediterranean, especially Egypt, around the start of the common era. It joined Babylonian planet records, Egyptian calendars and Greek geometry, and it is where houses and aspects first appear together.
Why it matters
Most of what a modern Western reading uses was put together then. Much of it was only translated into English in the last thirty years, which is why whole-sign houses came back into Western use so recently.
Try it
Switch your Western chart between whole-sign houses and Placidus. The whole-sign version is the Hellenistic method, so note which planets move and which layout describes your life better.
Common mistake
Assuming older means cruder. Hellenistic practice had stricter rules than modern pop astrology about which planets could affect which, so in several ways it was more precise.

Melothesia

The old map linking the twelve signs to parts of the body, from Aries at the head to Pisces at the feet.
What it is
The old system that mapped the signs onto the body from head to foot: Aries the head, Taurus the throat, and so on down to Pisces at the feet. It was standard in European medicine from Hellenistic times until about the 1600s.
Why it matters
It explains why so much old astrological language sounds medical, and why physicians once drew charts as often as kings did. A good part of the tradition’s vocabulary started here.
Try it
Open "What the tradition mapped onto the body" on your Western chart and see which body area your chart leans toward. Read it as a piece of history, never as health advice.
Common mistake
Reading it as medical advice. It is a historical scheme included to explain the tradition, and nothing in a birth chart is a diagnosis or a stand-in for a doctor.