Asteroid Bennu (IMAGE) University of Arizona Caption OSIRIS-REx mission scientists thought sampling a piece of Bennu would be like a walk on the beach, but the surprisingly craggy surface proved to be more of a challenge. Credit NASA/Goddard/University of Arizona Usage Restrictions N/A License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.