NASA @NASA
A ball pit for spacecraft?? Upon studying data from OSIRIS-REx, scientists discovered the surface of asteroid Bennu is loosely bound and offers very little resistance. In fact, the spacecraft had to use its thrusters to avoid sinking in: https://t.co/FzaEtZDz3t https://t.co/tpYpfzUGPp — PolitiTweet.org