A New Chemical 'Tree of The Origins of Life' Reveals Our Possible Molecular Evolution (ScienceAlert)

[NNadir]

3. I think there are different levels of "panspermia."

It's kind of like the difference between the absurdly speculative strong and weak so called "Anthropic Principle."

From my perspective, the origins of chirality are best explained by nuclear radiation's asymmetry in deep space, those connected with the weak force. The origin of chirality is a big problem, I think, one that is unlikely to be addressed in my lifetime.

I, for one, have little difficulty with chiral molecules arriving from space. They apparently did so with the Murchison meteorite.

Whether complex molecules like DNA or RNA did so is another question.

I will say that panspermia is a concept that addresses the issue of probability.

I haven't actually had a chance to look at the full paper, so it will be interesting to see what is addressed in it.