'Potentially hazardous' asteroid Bennu contains dust older than the solar system itself — and traces of interstellar space

Asteroid Bennu contains pre-solar system materials, including stardust and interstellar organics, as revealed by studies of OSIRIS-REx samples. Bennu's parent body formed in the outer solar system, experienced collisions, and reassembled. Its composition differs from other primitive asteroids due to ice-dust reactions. Bennu's surface undergoes rapid weathering from micrometeorite impacts. These findings offer insights into early solar system conditions and potentially life's origins on Earth.