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Robert Walker

Apparently, this user prefers to keep an air of mystery about them.

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10 Does the Moon have any captured objects orbiting it? Aug 1 '15
8 Which earth-based lifeforms can survive the vacuum of space? Aug 30 '15
8 Could there be liquid hydrogen oceans on the surfaces of worlds (including frozen gas giants) in the distant Kuiper belt or Oort cloud? Sep 7 '17
7 Is the “airship to orbit” mission profile feasible? Nov 28 '17
6 Is there a meteorite from Earth on Mars? Oct 28 '16
5 About how far was debris scattered from the Columbia incident? Jan 24 '17
5 How much power would a spacecraft's magnetic shield require? Jul 10 '16
3 Why are there no spacecraft rotating for artificial gravity? Feb 12 '14
3 Is 'Mars One' a one-way mission for fear of infecting Earth with unknown pathogens? Jan 5 '14
2 Curiosity is still dirty! How will the ExoMARS Rover keep its solar panels dust-free and collecting sufficient power? Dec 15 '18
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