One of the coolest space fact ever! #space #planets #exoplanets

[robertmartinez]

it’s true, once you pass the event horizon of a black hole you can technically see the back of your own head because you’ll be traveling at the speed of light, hence traveling with the light that hits the back of your head so for a short period of time you can see yourself from behind and as well as everything else emitting light from behind you.

[IGotsToKnow]

He learned how to make a meaningless word salad from Kommiela.

[Emilsn]

Amazing, didn't know apples expend when they get far enough

[JamesSned]

I don’t believe this.
Maybe if Neil deGrasse Tyson said it was true.