Science ❯ Astrobiology ❯ Origins of Life

Extraterrestrial Chemistry

Complex Molecules Pristine Samples Asteroid Samples

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