Speak to a(n astro)biologist. It is exceedingly likely that independently developed extraterrestrial life will use amino acids in some way, shape, or form. It i

Speak to a(n astro)biologist. It is exceedingly likely that independently developed extraterrestrial life will use amino acids in some way, shape, or form. It is exceedingly unlikely that it would use the exact same 20 amino acids, however, which would give a way of detecting panspermia. For that matter, any chemically unlikely preponderance of a subset of amino acids would be very strong evidence for life.