All articles tagged with #late heavy bombardment
Far-side Moon rocks imply a gradual decline of asteroid impacts over billions of years, not a single catastrophic bombardment, challenging the late heavy bombardment theory and offering a cleaner record of early Solar System history that informs Earth's ancient environment, aided by China’s Chang’e‑6 samples.
Astronomers detected erythrulose, a four‑carbon sugar, in a massive interstellar dust cloud (G+0.693-0.027) near the Milky Way’s center. The sugar forms on microscopic dust grains from glycolaldehyde and ethylene glycol at around -250°C and could be delivered to planets via comets or meteorites. This marks the first direct detection of a sugar in interstellar space and suggests simple sugars important for life may be more common in the cosmos, potentially seeding early Earth during periods of heavy bombardment.