Science ❯ Astrobiology ❯ Origins of Life

Extraterrestrial Chemistry

Asteroid Samples Pristine Samples Complex Molecules Chemical Diversity

Bennu Samples Show Amino Acids Likely Formed in Icy, Radioactive Environments

Isotopic fingerprints from OSIRIS‑REx material point to chemistry in frozen, irradiated ice rather than water‑based reactions.

OSIRIS-REx Study Reports Tryptophan Signal in Pristine Bennu Sample