[[ALH84001|Allan Hills 84001-meteoritten]] med sine ejendommelige strukturer (se billedet), Polonnaruwa-meteoritten med lignende strukturer og organiske molekyler<ref>[https://www.technologyreview.com/s/512381/astrobiologists-find-ancient-fossils-in-fireball-fragments/ Astrobiologists Find Ancient Fossils in Fireball Fragments. MIT Technology Rev. 2013]</ref> og Murchison-meteoritten med et højt indhold af mange organiske molekyler har sat gang i diskussionen om liv i universet.<ref>[https://slate.com/technology/2013/03/meteorite-life-claims-of-fossils-in-a-meteorite-are-still-wrong.html UPDATE: No, Life Has Still Not Been Found in a Meteorite. Slate 2013]</ref><ref>[https://pubs.geoscienceworld.org/jgs/article-standard/179/2/jgs2021-050/609631/False-biosignatures-on-Mars-anticipating-ambiguity False biosignatures on Mars: anticipating ambiguity. Journal of the Geological Society 2022]</ref>
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