published on: 2016-05-24 06:42:27
spaceexplorationphotography: Infographic about Planet 9, the
jb2489.tumblr.com/post/144846594100/
Physicists just found a link between dark energy and the arrow
startswithabang: The strongest gravitational show in the Universe
spaceexp: Mars in 2016 via reddit
looking-at-the-universe: Apparent retrograde motion of Mars