A SpaceX Dragon crew vents and begins to exit the spacecraft for a spacewalk in this animation. Credit: SpaceX ...

In the live-action version of “How to Train Your Dragon,” expressions can speak louder than words.

The mysterious ancient humans were only known from fossil fragments. Now, two papers argue a skull uncovered in China belongs to this group, after examining preserved DNA and proteins ...

SpaceX Crew Dragon Endeavor, with NASA astronauts Warren "Woody" Hoburg and Stephen Bowen, the United Arab Emirates' Sultan ...