Quote:
Originally Posted by Mr_Draco
I was going to mentioned the Moon however then you have people saying "When the Moon was created, it had a much lower orbit then it does now. This is because the Earth at the time didn't have the mass and the gravity to hold the Moon still so it drifted out gradually until the Earth became the size it is now and now it has the gravity to hold the Moon in orbit." Which we know is all  since even now the Moon is drifting out into outer space. |
Maybe they were a binary system and something caused the earth to become dominant. Though as to what i couldn't even begin to speculate.