NASA spacecraft discovers its target asteroid is spewing material and is much more rugged than expected

NASA’s OSIRIS-REx spacecraft made an astonishing discovery about the asteroid it has been orbiting since December: the rock is actively spewing material out into space. The asteroid, named Bennu, has ejected materials up to 11 times since the spacecraft has been there. But no one is sure what exactly is causing these bursts.
The revelation is just one of many surprises that scientists have learned about Bennu, ever since OSISIR-REx reached the asteroid late last year. Launched in 2016, OS