Get to Know Bennu Better Before OSIRIS-REx’s Sample Grab

It’s almost TAG time! On October 20, 2020 NASA’s OSIRIS-REx spacecraft will slowly descend from its orbit 2,500 feet (770 meters) above Bennu to briefly touch the asteroid’s pebbly surface with its TAGSAM instrument, quickly sucking in and filter-capturing a small amount of material which will be returned to Earth for scientific study in 2023….