Eric Walker added Mars Pathfinder - Wikipedia to 1996 Mars Pathfinder
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 a number of topics and a number of links to Mars (planet), and added Mars (planet) to Solar system and Planets
Eric Walker added a number of topics and a number of links to National Aeronautics and Space Administration (NASA), and added National Aeronautics and Space Administration (NASA) to Space travel, exploration and defense and Branches and agencies of the United States government