Synastry aspects, explained like you're new here

A couple of weeks ago I wrote about giving up on sun-sign compatibility charts, and a few of you reasonably asked: fine, what do you use instead?

Aspects. The answer is aspects. Here's the beginner-friendly version, because aspect talk is where most people's eyes glaze over, and it's actually the most intuitive part of the whole system.

What an aspect is

Lay two birth charts on top of each other. Every planet in your chart now sits at some angle to every planet in your partner's chart, measured around the wheel. A handful of those angles are considered meaningful, and those are the aspects.

That's it. An aspect is just "your Venus and my Mars happen to be 90 degrees apart." The interpretation comes from which angle and which planets.

The five that matter

• A conjunction (0°, same spot) merges two planets. Your Venus on my moon means your way of loving lands directly on my emotional needs. Conjunctions are strong and neutral — they amplify whatever the two planets are.
• A trine (120°) is flow. The two planets are in the same element and cooperate without effort. Trines feel like "we just get each other," and their dark side is laziness: nobody works on what works.
• A sextile (60°) is a friendly nudge — like a trine but it needs activation. Opportunity rather than gift.
• A square (90°) is friction. The two planets want incompatible things and keep elbowing each other. Squares generate heat: irritation, yes, and also most of the energy a relationship runs on.
• An opposition (180°) is a tug-of-war across the wheel. With planets, it often plays out as projection — you keep meeting your own disowned stuff in the other person. Oppositions are magnetic. That's not always a compliment.

"Hard" aspects are load-bearing

The squares and oppositions get called hard aspects, and new people read that as bad. Here's the reframe that took me embarrassingly long: charts with only soft aspects produce relationships with no grip. Pleasant, frictionless, and weirdly forgettable. The couples I know who've lasted decades all have a few honest squares — and they'll tell you exactly which ones, without needing the chart.

A square names the place where you'll have the same argument for years. That's only doom if nobody ever learns the argument's name.

Orbs, or why "almost" counts

Aspects don't have to be exact. An 86-degree angle still functions as a square. The allowance is called an orb, and most astrologers give majors somewhere around 6 to 8 degrees. The tighter the orb, the louder the aspect — a 1-degree square will be a recurring theme in your relationship; an 8-degree square is more of an occasional draft.

How to actually do this

Counting degrees by hand is monk work. The compatibility tool computes the cross-aspects for you and weights them into the overall score — synastry aspects are 20 percent of it — but, as ever, the list itself is worth more than the number. Look for the tightest two or three aspects between your charts. That short list is your relationship's table of contents.

And before anyone spirals in the comments: an ugly aspect list has never once stopped two stubborn people who like each other. The chart describes the terrain. You still pick the route.