Aspects in astrology: what the angles in your chart mean

What an aspect is

A birth chart is a circle of 360 degrees, split into 12 signs of 30 degrees each. Every planet sits at a specific degree. An aspect is a particular angle between two planets, and it means those two parts of you are in conversation.

Say your Moon sits at 10 degrees of Taurus and your Venus at 10 degrees of Virgo. They're 120 degrees apart, which is a trine, so your emotional needs and your love style tend to cooperate. If they were 90 degrees apart, a square, they'd still talk, with more arguing.

Planets that don't form an aspect still matter. They just work more independently, like coworkers in different departments.

The five major aspects

Most astrologers start with five aspects, all based on dividing the circle evenly.

A conjunction (0 degrees) puts two planets side by side, so their themes merge. Sun conjunct Mercury, which is very common, blends identity and thinking, so your opinions can feel like part of who you are. A sextile (60 degrees) usually connects signs of friendly elements, fire with air or earth with water, and works like an open invitation you have to accept.

A square (90 degrees) usually connects signs of the same modality, meaning the same style of action. Aries and Cancer are both cardinal signs that like to start things, and they clash over how. A trine (120 degrees) joins signs of the same element, so it tends to flow. An opposition (180 degrees) sits across the wheel, pulling you between two sides that each have a point.

Orbs: how close is close enough

Planets rarely sit at exactly 90 or 120 degrees apart. The wiggle room astrologers allow is called the orb. Many astrologers give up to about 8 degrees for conjunctions, squares, trines and oppositions, with smaller orbs for sextiles and sometimes larger ones when the Sun or Moon is involved.

A tight orb, within 1 or 2 degrees, tends to feel strong and constant. A wide orb feels more like background noise. If your Venus and Mars are 89 degrees apart, that square is likely a daily theme. At 97 degrees, it's still a square, and a much softer one.

Different websites use slightly different orbs, which is one reason the same chart can show a few more or fewer aspects from one site to the next.

Easy aspects and hard aspects

Trines and sextiles are often called soft or easy aspects. They show talents that come naturally, like a Mercury trine Neptune person who can write a moving toast with no effort. The downside is that easy things are easy to ignore, so these gifts can go unused.

Squares and oppositions are called hard aspects. They bring tension, and tension makes you move. Someone with Mars square Saturn might feel blocked every time they rush, then learn to work in steady bursts and end up very good at long projects. A chart with a few squares often belongs to someone who gets a lot done.

Conjunctions can go either way, depending on which planets are involved and how well they get along.

Which aspects to read first

A full chart can show 20 or more aspects, which is a lot to take in. Narrow it down. Start with aspects that involve your Sun, your Moon or the planet that rules your rising sign, because those touch your core. Then look at the tightest orbs anywhere in the chart.

Aspects between two slow planets, such as Uranus and Pluto, are shared by everyone born within a few years of you. They matter more as background than as personal traits, so save them for last.

Watch for shapes, too. A T-square, for example, is two planets in opposition that both square a third planet. Patterns like that often become a running theme in someone's life.

Reading an aspect in plain words

To read any aspect, put three things together: what the first planet does, what the second planet does and the kind of angle between them. Moon square Mars, for example, puts your feelings (Moon) at odds with your anger (Mars). In real life that can look like snapping when you're hurt, then feeling bad about it an hour later. The work is learning to name the hurt first.

Venus trine Jupiter combines love (Venus) with generosity (Jupiter) in an easy flow. You may be the friend who remembers everyone's birthday and plans the surprise. Its friction, small as it is, is overdoing it.

Try writing one sentence for each of your three tightest aspects. It's a fast way to see your chart as a set of relationships between the parts of you.

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