Space.com Should NASA’s Next Mars Rover Tread New Ground? 1 March 2017 fborgosano Leave a comment Share: Columbia Hills/Gusev Crater, which NASA’s now-dead Spirit rover studied intensively from 2004 through 2009, is one of three finalist landing sites for the agency’s next Mars rover, a life-hunting machine scheduled to launch in 2020. from Space.com bit.ly/2md1Ctq Share: