Quote Originally Posted by Gatekeeper777
Earth was hit by another planet the size of mars. they say we got the moon out of the deal and a new Earth.
the original Earth Earth mark 1 was wiped out along with any trace of life it may have had.
after the collision earth mark 2 formed along with our moon and the rest they say is history.
Will it happen again? Absolutely.
When? thats any ones guess.
Well, it's very unlikely something of that size would hit the Earth in the few billion years our planet has left to live. All the larger objects in our solar system with unstable orbits have already crashed into other things or fallen into the sun. The only things left in our neighborhood that are as big as a planet are the planets themselves and their moons, which have survived this long because they have achieved orbits that prevent them from smashing into things.