Ruins of the ancient civilization show that the people could predict equinoxes and solstice with great precision. How do you think they were able to do so?

The people could predict equinox and solstice with great precision because they were great observers and they could calculate with precision. They had rock structured with different marks that showed different positions of the sun when it passed celestial equator.Explanation:

im just that guy your welcome

giant impact theory - the moon was formed from the collision between earth and another mars-sized body.

colliding planetesimals hypothesis - the moon was formed from the same cloud of material as earth.

capture hypothesis - the moon was locked into orbit by earths gravity as it was passing by it.

accretion hypothesis - the moon was formed from collisions and combining of planetesimals.

i think this is right, if not and you know better let me know.