Eric Walker added Dawn (spacecraft) - Wikipedia to 2007 Dawn (spacecraft)
Eric Walker added Planet Ceres is an 'ocean world' with sea water beneath surface, mission finds | Science | The Guardian and Dawn (spacecraft) - Wikipedia to Dawn (spacecraft), and added Dawn (spacecraft) to Space telescopes and research satellites and National Aeronautics and Space Administration (NASA)
Eric Walker added a number of topics and Maxar and Space telescope - Wikipedia to Space telescopes and research satellites, and added Space telescopes and research satellites to Artificial satellites, satellite networks, space stations and space missions and Telescopes
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