Bennu is Constantly Getting Sandblasted by Tiny Meteoroids

As soon as OSIRIS-REx spacecraft arrived at asteroid Bennu in December 2018, there was a big surprise. Scientists expected Bennu's surface would consist of fine-grained material like a sandy beach. But take a look at that surface: Bennu is a jumbled mess. Here's a closer view: And amazingly, amid that mess, pieces of Bennu's surface …