How small particles could reshape Bennu and other asteroids
Boulder CO (SPX) Sep 10, 2020
In January 2019, NASA's OSIRIS-REx spacecraft was orbiting asteroid Bennu when the spacecraft's cameras caught something unexpected: Thousands of tiny bits of material, some just the size of marbles, began to bounce off the surface of the asteroid - like a game of ping-pong in space. Since then, many such particle ejection events have been observed at Bennu's surface. OSIRIS-REx is an unpr
