NASA’s latest asteroid target had a wet and wild history

Long before it struck out on its own, a distant, small asteroid called Bennu had a wet, watery start, according to new evidence just announced by NASA.NASA’s OSIRIS-REx spacecraft, which arrived at Bennu on December 3rd after a two-year journey, is currently positioned about 12 miles above the surface of the asteroid. It recently sent back data indicating that the asteroid’s surface is littered with clay-like minerals that indicate that parts of this space rock had liquid water at s