Originally posted by Big League jedi
Even if life initially came from somewhere else, it doesn't change anything, whether it came from space or my ass, the phylogenetics are still the same and where humans fit in the tree is very well defined.
There was like a billion years when life on earth didn't consist of anything beside slime mold.
Not even green slime mold either. They didn't have multi-cellular life, or even oxygen back then. In fact the evolution of green slime mold, who had figured out photosynthesis, caused the first holocaust, oy vey, remember the 6 zillion
https://en.wikipedia.org/wiki/Great_Oxidation_EventI find it kinda unlikely that a rock fell from somewhere which had anerobic bacteria on it that just happened to survive being blasted into space, being irradiated in space, re-entry, and landing on a hostile and foreign planet.
Call me a skeptic, but that just sounds a little bit unlikely to me.
But hey, could be wrong, who knows.