13
Aug
Washington: After grappling with the rugged reality of asteroid Bennu's surface, NASA, the US space agency, has finally selected four potential sites for its spacecraft to "tag" its cosmic dance partner.Since its arrival in December 2018, the OSIRIS-REx spacecraft has mapped the entire asteroid in order to identify the safest and most accessible spots for the spacecraft to collect a sample. These four sites now will be studied in further detail in order to select the final two sites -- a primary and backup -- in December, NASA said in a statement on Tuesday."We knew that Bennu would surprise us, so…