Evidence, Debates, and AI in the Search for Extraterrestrial Life: Meteorites, Space Probes, and Radio Astronomy

To the point

It weaves together evidence from meteorites (Orgueil, Murchison), the Martian ALH 84001, space missions and radio astronomy to weigh life beyond Earth, recounting disputed microfossil claims (Nagy and Hennessy vs. Anders and Fitch) and later support (Aerts, Elsaesser; Oba, Takano, Glavin, Dworkin, Naraoka), the McKay PAH idea, discoveries of water and subsurface habitats, the role of AI in spotting biosignatures among abiotic signals, and NASA’s cautious conclusion that no definitive life has been proven yet while exploration considers non‑Earth chemistries for future resource use.