If you love NASA and want to waste away a few hours this is certainly a fun, educational, and entertaining way to do it. They've started pages on both GIPHY & Pinterest. Their GIPHY page has some flat out funny and really shareable stuff. While their Pinterest page takes a little bit more of a serious and educational note.
They share some historical imagery/information and of course current stuff too. Everything from what's going on with our solar system to weather patterns on Earth.
Check out NASA's GIPHY Page HERE
Check out NASA's Pinterest Page HERE