I hope it slams into it and huge chunks come raining down on the earth, oh wait, no that’s bad, never mind ...
I recently saw a show on one of the science/learning/history channels where they were debating evidence that chunks of Mars did hit the earth in just this way in the past (landing in Antartica, I vaguely remember).
If I remember correctly, they were even debating if the martian rock had microscopic fossils in it.
I was only half listening and don't remember the details. Anyone else see this show? In retrospect, I guess I should've listened more closely...