The square sets two functions at odds: they pull in different directions and force the person to find an adjustment.
Two needs in the chart collide at a right angle: the tension forces action, and the action ends up building something.
An energy that sets things in motion, pushing you to solve problems rather than avoid them.
Replaying the same inner conflict without seeking the compromise that would make it fruitful.
By Thomas Guilhot · updated
Two people carrying a piece of furniture up a narrow staircase, each pulling their own way: they have to talk, adjust the angle, start again.
The square resembles this. The two planets involved are 90° apart, generally in signs of the same modality, cardinal, fixed, or mutable, but of opposite polarities: fire against water, earth against air. They share a way of acting but not the same needs, and their demands cross.
Tradition calls it dynamic. Concretely, the person feels a tension between two functions: Moon square Mars would mix sensitivity and impulsiveness, Venus square Saturn tenderness and reserve. This friction is not a fatality. It creates a dissatisfaction that pushes you to act, to learn, to correct. Many astrologers note that the charts of very active people readily contain several squares. It is accepted up to 7° from the right angle, and up to 8° when the luminary of the day or that of the night is involved.
The downside would be repetition. If it goes unrecognized, the tension replays in the same situations: the same argument, the same discouragement, the same excess. Naming the two needs at play, and looking for an arrangement where each finds its place, turns friction into skill. Over time, a well-worked square would become one of the chart’s most solid assets.
Between personal planets, a square describes needs that do not match at first: a desire for freedom and a need for security, momentum and caution.
When it links two partners’ charts, it signals points of friction, but also a vivid attraction: what irritates also stimulates. The relationship progresses when each agrees to negotiate rather than insist on being right, and when arguments help clarify what each really needs.
The square supplies the energy of effort.
It pushes you to take on challenges, overcome obstacles, prove something, sometimes to yourself. You find it in people who go back to school at forty or start a business after a failure. It can also create tension with colleagues or management when frustration overflows. Channeling it into a specific goal, athletic, professional, or volunteer, makes it a remarkable driver.
It betrays itself through irritations that always return in the same form: a delay that makes anger rise, a purchase that immediately brings guilt, an offhand remark that spoils the evening.
These reactions have a logic, that of two needs that thwart each other. Spotting the pattern lets you prepare a different response, and gradually turn a familiar irritation into a better-chosen gesture.
Ptolemy, in the Tetrabiblos, explains the square through the geometry of the signs: it joins signs of opposite genders, one masculine, the other feminine, which would account for their disagreement.
Medieval authors and Lilly ranked it among the aspects of enmity, though less violent than the opposition, and attributed to it obstacles, delays, and frustrations. Their vocabulary, which spoke of an evil look, is not taken up here: it serves only to place the tradition.
Modern astrologers see it instead as a growth crisis. Dane Rudhyar distinguished the waxing square, a crisis of action, from the waning square, a crisis of awareness, according to the phase of the cycle between the two planets.
Tradition calls it dynamic: the two functions are said to pull against each other and call for an adjustment, without foretelling anything.
The orb is the margin allowed around the exact angle (see the orb concept); the site uses ± 7°, ± 8° with a luminary.
90° = 3 × 30°: the two planets are usually 3 signs apart.
Between 83° and 97° apart, the aspect counts (± 8° if the Sun or the Moon is involved).
Tradition calls it dynamic: the two functions are said to pull against each other and call for an adjustment, without foretelling anything.
A right angle between two planets, three signs apart, within the orb. It most often links signs of the same modality but of different polarities. For tradition, it is dynamic: the two functions collide and call for an adjustment.
No. Tradition called it difficult, but the site ranks no aspect as good or bad. The square creates a tension that pushes you to act; it signals an effort to make, not a trial foretold. Many astrologers consider that a chart with no square at all lacks drive, while a worked-through square becomes a lasting skill.
In the cycle of two planets, the faster one forms a first square as it moves away from the conjunction, then a second as it returns toward it after the opposition. For the Sun and Moon, these are the first and last quarters. Rudhyar saw in the first a crisis of action, in the second a calling into question.
The pairs
Each cell leads to the pair’s page. The luminaries have a slightly wider orb.
| Moon | ☌︎⚹︎□︎△︎☍︎ | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Mercury | ☌︎Sun and Mercury: impossible aspect | ☌︎⚹︎□︎△︎☍︎ | |||||||
| Venus | ☌︎Sun and Venus: impossible aspect | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎Mercury and Venus: impossible aspect | ||||||
| Mars | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | |||||
| Jupiter | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ||||
| Saturn | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | |||
| Uranus | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ||
| Neptune | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | |
| Pluto | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ | ☌︎⚹︎□︎△︎☍︎ |
| Sun | Moon | Mercury | Venus | Mars | Jupiter | Saturn | Uranus | Neptune |
Crossed-out cell: an aspect the sky never forms (Mercury stays within 28° of the Sun, Venus within 47°).