Iirc, a mass roughly the size of Mars collided with the Earth. The debris that was expelled from the collision was caught in the now larger planet’s gravitational field. At one point, the earth had a ring, that slowly accumulated into one large mass becoming our moon. I took some astronomy courses years ago, and that was what we were told about the formation of the moon.
KurtisLloyd t1_je5otr4 wrote
Reply to comment by speedywilfork in More Water Found on Moon, Locked in Tiny Glass Beads by Gari_305
Iirc, a mass roughly the size of Mars collided with the Earth. The debris that was expelled from the collision was caught in the now larger planet’s gravitational field. At one point, the earth had a ring, that slowly accumulated into one large mass becoming our moon. I took some astronomy courses years ago, and that was what we were told about the formation of the moon.