“We Were Scratching Our Heads” – Scientists Finally Solve Asteroid Bennu’s Surface Mystery

A close look inside Bennu’s rocks revealed an unexpected clue that changed the story. One of the most unexpected findings of NASA’s OSIRIS-REx mission was the true nature of Bennu. Instead of showing many smooth areas, as earlier Earth-based observations had suggested, the asteroid turned out to be a harsh, uneven world littered with large [...]

from SciTechDaily https://ift.tt/hfO04YD