Image: Craters in the center of Apollo basin (36°S, 209°E) named after Space Shuttle Challenger astronauts, LROC WAC mosaic, ~190 km wide [NASA/GSFC/Arizona State University]. Apollo is a 524 km-diameter impact basin located within the center of the the giant South Pole-Aitken basin. Apollo is also a Constellation Project Region of Interest, identified by NASA … Continue reading Challenger Astronauts Memorialized on the Moon