Lunar rover prototype conquers steep, scary lander exit test
NASA's lunar rover VIPER recently completed another successful round of rigorous tests of the agency's first robotic Moon rover's ability to drive off the Astrobotic Griffin lunar lander and onto the lunar surface. Called an egress, this hours-long operation is one of the most critical and trickiest parts of VIPER's 100-day mission. It could be even trickier if VIPER's off-ramps onto the Moon ar