180° · orb 8° · 320 searches a month

Mars Opposition Uranus

Read as polarity — and present in 4.44% of random pairings, which is the part usually left out.

Checked against chance

How often this happens anyway

Exact angle 180°
Orb allowed ±8°
Odds by chance 4.44% — about 1 pairing in 23
Mars per sign 0.16 years
Uranus per sign 7 years
Searched 320/mo · rank 86 of 382

Uranus takes about 7 years to cross one sign. Everyone born inside that window has it in the same place, so this aspect is largely a description of the age gap between two people rather than of the relationship.

Put concretely: if you and your partner were born a few years apart, this aspect was decided by the calendar before either of you existed. Why 40.1% of searched aspects work this way →

How the odds are calculated →

What these two planets are doing

Mars

Drive, appetite and how conflict gets handled.

Uranus

The impulse to break a pattern.

At 180° the question this pairing raises is whether wanting things together produces heat or friction, set against whether disruption is shared or one-sided. A opposition puts those two demands at odds rather than in agreement, which is why this aspect is read as work rather than ease.

Uranus moves 43.8 times slower than mars, so the faster one sets how long the exact angle holds.

If the birth time is wrong

This aspect survives 15.6 days of error

0.02° per hour — how far Mars moves, the faster of the two and therefore the one that decides.
the orb allowed for opposition. Beyond it the aspect is no longer counted at all.
Robust Even a badly remembered birth time leaves this one standing.

Worked out from how far the faster point travels per hour against the orb allowed. Why birth-time accuracy decides which aspects to trust →

Mars and Uranus at other angles

The same two planets meet at 3 angles that people search for. Same functions, different relationship between them.