alt Hacker NewsI don't see any reason for the source molecules to come from space. We already know that nucleotides will spontaneously form and polymerize in conditions consistent with the early earth, and a meteorite origin just moves the source of those nucleotides elsewhere but doesn't answer how they formed.
space has been around for a lot longer than earth, its possible that inter planetary generation of nucleic acids may be primarily a matter of chemistry.
Nucleobase synthesis in interstellar ices[2019]
https://www.nature.com/articles/s41467-019-12404-1?error=ser...
Chemistry of Abiotic Nucleotide Synthesis[2020]
https://pubs.acs.org/doi/10.1021/acs.chemrev.9b00546