NASA completed its first-ever medical evacuation from space, bringing four astronauts back to Earth early after a health issue aboard the International Space Station....

SpaceX guided the capsule to a middle-of-the-night splashdown in the Pacific near San Diego, less than 11 hours after the astronauts exited the International Space Station....

The US could have to pay up to $700 billion to acquire Greenland, NBC has reported...