Ahhhhh, settled science, eh?
Oh c'mon. What's more likely, that the biological paricles found in earth's stratosphere originated from, you know, earth, of that they sailed light years across the cold void of outer space and ended up in earth's stratosphere? Obviously, they sailed light years across the cold void of outer space and ended up in earth's stratosphere - - it's "generally accepted". Like "global cooling I mean warming", whatever.
............Ahhhhh, settled science, eh?..................
Well, finally it seems that we have found the source of globull warming!