published on: 2016-04-13 03:09:10
n-a-s-a: This stamp featuring the Soyuz, Mercury, and Gemini
nasahistory: A beautiful picture of a windsock.
humanoidhistory: TODAY IN HISTORY: On May 1, 1979, the prototype
jb2489.tumblr.com/post/143697043060/
spaceexplorationphotography: Infographic about Planet 9, the
jb2489.tumblr.com/post/144846594100/