Uganda New York Times world20 Mar 2019Rugged asteroid is spitting debris into space, complicating NASA's scrutinyHOUSTON — The asteroid Bennu, with the shape of a spinning top, turns out to be extremely rugged. That is going to make it difficult for a NASA spacecraft, OSIRIS-Rex, to vacuum up a sample to take back to Earth. It was designed to collect sand and gravel, not boulders.
