Space flights, Cosmonautics

07-October-2019 Monday
"Space" genius under a false name


ScienceFirstHand
 
"Space" genius under a false name
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Space flights Cosmonautics Space moon

02-May-2016 Monday
Perturbation maneuver or how to deceive the law of conservation of energy.


jaga63
 
Perturbation maneuver or how to deceive the law of conservation of energy.
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GIF Space flights Cosmonautics
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