Origins of Life from Asteroid Bennu — OSIRIS-REx Amino Acid Clues

Asteroid Bennu and the origins of life: new amino acid clues from OSIRIS-REx samples How Bennu asteroid dust, frozen ice radiation chemistry, and space chemistry rewrite theories of how life began on Earth Discover fresh evidence for multiple prebiotic chemistry pathways and what Bennu’s amino acids reveal about life’s building blocks in space What You'll Learn: Why the OSIRIS-REx sample from asteroid Bennu is a game‑changer for studying the origins of life and amino acids in space What it means that Bennu’s dust contains ~4.7 wt % carbon and ~6 wt % water‑bearing minerals for prebiotic chemistry potential How amino acids with D/H ratios up to 5× Earth’s oceans point to formation in frozen ice exposed to radiation instead of warm liquid water What magnesium–sodium phosphate grains reveal about Bennu’s minimal thermal alteration (below ~50 °C) and preservation of delicate space chemistry signatures How Bennu’s isotopic fingerprints differ from well‑studied meteorites, and why that suggests multiple pathways for creating life’s ingredients in the early Solar System The role of frozen ice radiation chemistry in synthesizing complex organic molecules and how this challenges traditional ‘warm pond’ origin‑of‑life scenarios What Bennu’s composition tells us about how water, organics, and prebiotic molecules may have been delivered to early Earth How future OSIRIS-REx analyses of Bennu asteroid dust could refine our understanding of how life’s chemistry starts on other worlds