Shocking before-and-after images show the terrifying damage that months spent in the harsh conditions in space will do to you ...

He was the first human to float untethered in space. The image of him drifting alone above the Earth is considered the most terrifying space photo ever taken. His spacewalk was not a stunt.

"Could our galaxy one day experience similar high-energy phenomena that will have serious consequences for the survival of precious life in it?" ...