Phosphate in NASA’s OSIRIS-REx asteroid sample suggests space rock Bennu originated from an ocean world
On September 24, 2023, NASA’s OSIRIS-REx spacecraft dropped a capsule on Earth containing pristine carbonaceous regolith collected from the near-Earth asteroid Bennu. These samples were obtained after the probe completed an impressive seven-year tour of the solar system and back. Since these pieces of space rock arrived (about 120 grams of sample, to be precise), … Read more