[frozennorth]

Do you mind explaining why the current moon hypothesis isn't likely?

The consensus from the intro geology classes I've take seems to be that the Earth was hit by a Mars sized object which caused the resulting molten debris to coalesce and differentiate forming our current Moon in the process.

[danieltillett]

It is not that the hypothesis is unlikely [0], it is the formation of the moon that is very unlikely. When you try to simulate a collision between the Earth and Mars-sized planet it is very unlikely to create the Moon.

0. https://en.m.wikipedia.org/wiki/Origin_of_the_Moon