OSIRIS-REx Begins its Countdown to TAG

A historic moment is on the horizon for NASA’s OSIRIS-REx mission. Later this month, the robotic OSIRIS-REx spacecraft will descend to asteroid Bennu’s boulder-strewn surface, touch down for a few seconds and collect a sample of the asteroid’s rocks and dust – marking the first time NASA has grabbed pieces of an asteroid, which will be returned to Earth…