https://www.youtube.com/watch?v=WwT_SbBtX8U http://bit.ly/3a9hq5Z
Illustris Simulation of the Universe via NASA https://go.nasa.gov/2wzK7dv
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via Tumblr http://bit.ly/2VdWTZy
via Tumblr http://bit.ly/2HOOXGo
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abandoned http://bit.ly/2Pf7M9R
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via Tumblr http://bit.ly/2HO4Mgs
Seeing an Aurora From the Space Station : “Years ago at… http://bit.ly/2HP5eeu
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via Tumblr http://bit.ly/2V9qYtk
