What is an aspect?

An aspect is the angular distance between two planets in your natal chart, measured in degrees. Five angles carry most of the weight, namely 0 for a conjunction, 60 for a sextile, 90 for a square, 120 for a trine and 180 for an opposition. Each one describes a different conversation between the two planets, whether fusion, support, friction, flow or tension. In Moon Shine AI, Selene turns that web of angles into language you can follow without having studied astrology.

The measurement hiding behind the word

A natal chart is a circle of 360 degrees and every planet holds one point on it. An aspect is nothing more exotic than the distance between two of those points. Say the Sun sits at the tenth degree of Aries and the Moon at the tenth degree of Cancer. Exactly ninety degrees separate them, and that already counts as an aspect with a name of its own, the square.

Not every angle carries the same weight. Over time the tradition settled on five distances that kept showing up with more symbolic force, those being 0, 60, 90, 120 and 180 degrees. These are the major aspects. Minor angles exist too, among them 30, 45, 72, 135 and 150, and some astrologers work with them while others leave them out entirely. It is a question of school rather than of accuracy.

Worth catching here is that an aspect does not depend on which sign each planet occupies. It depends on the real distance between them. Two planets sitting in signs that look opposite at a glance may not be in a genuine opposition at all if their exact degrees fail to line up.

The five major aspects, one at a time

A conjunction is zero degrees. Two planets nearly stuck to each other, energies blending until they are hard to pull apart. It can feel like a fusion of themes, and at times an intense one. The sextile is sixty degrees, an easy and somewhat passive relationship. It helps, though it rarely pushes on its own, so a certain amount of will is needed to get the value out of it.

Ninety degrees gives you the square. Friction, tension, a shove that is uncomfortable and also gets you moving. Much of the personal growth people describe in consultation comes from a square they worked with rather than from a comfortable aspect. The trine at 120 degrees runs the other way, flowing almost without effort. That sounds like the better deal, except the same ease can leave a talent sitting undeveloped.

The opposition closes the list at 180 degrees. Two planets facing each other from opposite poles of the circle, which is not the same as pure conflict. More often it works as a pull in both directions, looking for balance between two needs that are equally real.

What is an orb, and why does it decide so much?

Almost no aspect lands on the exact degree. The orb is what handles that, the margin of tolerance allowed around the perfect angle. If the Sun and Mars sit ninety three degrees apart, that still counts as a square, because three degrees of difference fits inside the usual orb. For the Sun and the Moon, known as the luminaries, the orb tends to be more generous and can stretch to eight or ten degrees. For minor planets and asteroids it tightens to three or five.

Tighter orbs make an aspect hit harder in practice. A square that is one degree from exact weighs far more than one sitting at seven. Different astrologers, and different pieces of software, run slightly different orb tables. This is exactly why two readings of the same chart sometimes disagree on how many aspects are in it. Nobody miscalculated. The criteria simply differ.

What aspects actually change in a reading

Without them a natal chart would be little more than a list of ten loose planets, each parked in a sign and a house with nothing said between them. Aspects are the network of relationships that connects the pieces. An isolated Venus tells you one thing. A Venus squaring Saturn tells you something else entirely, carrying more weight and more history behind it.

Reading a chart with any fluency works better if you first know what each planet stands for on its own. Only then do the angles start meaning anything, since what they describe is how those individual meanings meet, support each other or grate inside one person. The birth chart lesson in the Astrology School covers the planets first for that reason, then brings the aspect grid in on top.