HOUSTON—Even with its recent push to return astronauts to the lunar environs, NASA has not given up on landing astronauts on Mars and assessing what they can do to address the question of whether the red planet hosts or once hosted life. The agency’s Mars Human Landing Sites Study effort, formally initiated in October 2015 with the identification of 47 candidate Exploration Landing Zones that may address the life issue as well as host potential in situ resources from which ...
