The whole sky, on one page
Signs · Planets · Houses · Elements · Aspects · Everything you need to read a chart, in O’Mara’s words
– Start here
A birth chart looks complicated and is, underneath, only four ideas stacked together. There is a sign, which is a style, a way of going about a thing. There is a planet, which is the thing being done, the part of you in question. There is a house, which is the area of life it happens in. And there are aspects, which describe how the parts get along with one another. A planet, in a sign, in a house, holding a conversation with the other planets. That is the entire grammar. Everything below is just vocabulary for those four.
This page is the quick reference, the whole sky on one screen. Each sign links to its full personality portrait if you want the long, honest version. The deeper guides to the planets, houses and aspects will hang off this page as they are written. For now, this is the map you can keep open in a tab.
– The twelve signs
A sign is not a personality. It is a style, a way of doing whatever a planet does. The Sun in Aries and the Sun in Libra both shine; one shines by charging forward, the other by weighing things up. Each sign has an element (its temperament), a modality (how it moves), and a ruling planet (the engine behind it). The traits below are the shorthand. The full portrait of each sign, the honest one including the difficult parts, is one click away.
| Glyph | Sign | Dates | Element | Mode | Ruler | In a phrase |
|---|---|---|---|---|---|---|
| Aries | 21 Mar – 19 Apr | Fire | Cardinal | Mars | The one who goes first | |
| Taurus | 20 Apr – 20 May | Earth | Fixed | Venus | The one who will not be rushed | |
| Gemini | 21 May – 20 Jun | Air | Mutable | Mercury | The one who has to know | |
| Cancer | 21 Jun – 22 Jul | Water | Cardinal | Moon | The one who makes a home of it | |
| Leo | 23 Jul – 22 Aug | Fire | Fixed | Sun | The one who warms the room | |
| Virgo | 23 Aug – 22 Sep | Earth | Mutable | Mercury | The one who fixed it before you noticed | |
| Libra | 23 Sep – 22 Oct | Air | Cardinal | Venus | The one who weighs it back to fair | |
| Scorpio | 23 Oct – 21 Nov | Water | Fixed | Pluto | The one who sees straight through it | |
| Sagittarius | 22 Nov – 21 Dec | Fire | Mutable | Jupiter | The one already eyeing the horizon | |
| Capricorn | 22 Dec – 19 Jan | Earth | Cardinal | Saturn | The one still climbing | |
| Aquarius | 20 Jan – 18 Feb | Air | Fixed | Uranus | The one a step outside the circle | |
| Pisces | 19 Feb – 20 Mar | Water | Mutable | Neptune | The one who feels the whole room |
A sign is not who you are. It is the accent you do everything in. The chart is the sentence; the sign is only how it is spoken.
– The four elements, the three modes
Every sign is one of four elements and one of three modalities. Learn these six ideas and you can half-read a sign you have never studied, because the element tells you its temperament and the modality tells you how it moves through the world.
Aries, Leo, Sagittarius. Drive, warmth, faith, the impulse to act and to inspire. Burns bright, sometimes burns out.
Taurus, Virgo, Capricorn. Practicality, patience, the made and the lasting. Builds slowly, holds firm.
Gemini, Libra, Aquarius. Thought, language, connection, perspective. Lives a little above the ground, on purpose.
Cancer, Scorpio, Pisces. Feeling, memory, intuition, depth. Reads the room before the room has spoken.
Aries, Cancer, Libra, Capricorn. The starters. They begin things, open seasons, set things moving.
Taurus, Leo, Scorpio, Aquarius. The sustainers. They hold, deepen, refuse to be hurried off course.
Gemini, Virgo, Sagittarius, Pisces. The adapters. They bend, change, end one season and ready the next.
– The planets
If the sign is the style, the planet is the function, the actual part of you it describes. The Sun is your core, the Moon your inner weather, Mercury your mind, and so on outward. The personal planets move fast and shape the individual; the social and outer planets move slowly and shape a whole generation through one person. A fuller guide to each planet will live here in time. This is the shorthand.
| Glyph | Planet | Governs | Ask of it |
|---|---|---|---|
| ☉ | Sun | Core self, vitality, what you are becoming | Who am I, at centre? |
| ☽ | Moon | Emotion, instinct, what makes you feel safe | What do I need? |
| ☿ | Mercury | Mind, communication, how you think and speak | How do I process it? |
| ♀ | Venus | Love, beauty, value, what draws you | What do I want, and how do I love? |
| ♂ | Mars | Drive, desire, anger, how you act and pursue | How do I go after it? |
| ♃ | Jupiter | Growth, faith, luck, where you expand | Where do I reach for more? |
| ♄ | Saturn | Limits, time, discipline, what you must earn | Where is the work? |
| ♅ | Uranus | Change, freedom, the unexpected, where you break form | Where am I different? |
| ♆ | Neptune | Dream, compassion, illusion, where edges dissolve | Where do I long, and where do I lose myself? |
| ♇ | Pluto | Power, depth, transformation, what is remade | What must die so I can change? |
| ☊ | North Node | The growth direction, the unfamiliar work | Where am I being asked to go? |
| ☋ | Chiron | The old wound, and the healing you can give from it | Where do I hurt, and help? |
The planets are not forces acting on you. They are the cast of you, each one a part you were always going to have to play.
– The twelve houses
The sign is the style, the planet is the function, and the house is the setting, the actual area of life where it plays out. The same Mars wants the same things in everyone; in the tenth house it pushes a career, in the seventh it pushes a relationship. Twelve houses, twelve arenas, running from the most personal to the most collective. A deeper page for each will live here in time.
| House | Rules | The question it asks |
|---|---|---|
| First | Self, body, the first impression, how you arrive | How do I show up? |
| Second | Money, possessions, values, self-worth | What is mine, and what is it worth? |
| Third | Mind, siblings, the near world, everyday speech | How do I communicate close to home? |
| Fourth | Home, roots, family, the private inner ground | Where do I come from? |
| Fifth | Creativity, romance, children, play | What do I make for the joy of it? |
| Sixth | Work, health, service, daily routine | How do I tend the day to day? |
| Seventh | Partnership, marriage, the close other | Who do I meet as an equal? |
| Eighth | Intimacy, shared resources, death, transformation | What do we share, and what changes me? |
| Ninth | Belief, travel, higher study, meaning | What do I believe, and how far do I go? |
| Tenth | Career, status, reputation, the public self | What am I known for? |
| Eleventh | Friends, groups, hopes, the wider circle | Who are my people, and what do we want? |
| Twelfth | The hidden, solitude, surrender, the inner sea | What lives in me out of sight? |
– Aspects
An aspect is the angle between two planets, and it describes the relationship between those two parts of you. Some angles are easy and some are friction, but easy is not always good and friction is not always bad. The hard aspects are where the growth tends to be; the soft ones are the talents you barely notice you have.
| Aspect | Angle | Nature | What it feels like |
|---|---|---|---|
| Conjunction | 0° | Intense, blended | Two parts fused, acting as one, for better and worse |
| Sextile | 60° | Easy, available | A door that opens if you walk through it |
| Square | 90° | Tension, drive | Friction that forces growth, the productive grit |
| Trine | 120° | Flowing, gifted | A talent so natural you forget it is rare |
| Opposition | 180° | Polarity, balance | A see-saw between two needs, asking to be balanced not won |
– Putting it together
Now the four ideas combine into one sentence. Take any planet. Read it as: this part of me (the planet), does its thing in this style (the sign it is in), in this area of life (the house it is in), and gets on with the rest of me like this (its aspects). Moon in Capricorn in the seventh house reads, roughly, as my emotional needs are met through structure and self-reliance, and they play out in close partnership. That is a real reading. You just did it.
Begin with the big three and you will already understand most of someone. The Sun is the core self, the project of a life. The Moon is the inner weather, what you need to feel safe. The Rising sign, the sign on the horizon at your birth, is the doorway, how you arrive and how the world first reads you. Sun for who you are becoming, Moon for what you need, Rising for how you meet the world. Most of the rest is detail hung on that frame.
And then stop treating it as a verdict. A chart is not a sentence passed on you. It is a description of the instrument; the music is still yours to play. Read it for what is useful, leave what is not, and let it be a language rather than a law.
A note on how to use astrology: This reference is a symbolic and interpretive art, not a predictive science. If something resonates, that is what matters. Astrology works best when it feels useful rather than literal. The sky offers a language; what you do with it is yours entirely.
The cheat sheet is the map. The personality portraits are the territory, each sign written in full, the honest version, including the parts most horoscopes leave out.