stupidest theory i’ve heard in a long time. complex organic molecules can’t last 5 years in the unprotected radiation of space. they sure as heck won’t last 5 billion years to drift here (and i’m ignoring the fact that we’ve never found anything organic drifting around out there. it would be everywhere if this were how stuff got here).
don’t believe radiation destroys stuff? rubber molecules are large organics. leave a piece in the dessert for 5 years and see what’s left. nothing complex.
truth is, origin of life researchers haven’t a clue how life bean.
Not only is the radiation damage an issue, what about chirality? All amino acids in life are left-handed. What is the mechanism in a nebula for that? There isn’t one. These guys have no answers, and so they have fallen back on panspermia.