Eric Walker added Spirit (rover) - Wikipedia to 2003 Spirit (rover)

Eric Walker added How NASA’s Future Rovers Might Escape Alien Sand Traps - The New York Times to a number of topics

Eric Walker added a number of topics and How NASA’s Future Rovers Might Escape Alien Sand Traps - The New York Times and NASA's Dragonfly Mission to Titan Will Look for Origins, Signs of Life | NASA to Rovers (space exploration), and added Rovers (space exploration) to Space travel, exploration and defense and Robots, robotics and automation

Eric Walker added Spirit (rover) - Wikipedia and How NASA’s Future Rovers Might Escape Alien Sand Traps - The New York Times to Spirit (rover), and added Spirit (rover) to Rovers (space exploration)