Spanning a million square miles and dotted with more than 700 islands, the Caribbean Sea was one of the last places colonized by Native Americans as they explored and settled North and South America.

"I think every astronomer is going to find something of value here, as NASA's missions enable the world to answer fundamental questions about how the universe got its start, and how it changed to ...

Blue Origin is targeting Dec. 18 for its NS-37 suborbital launch, which will fly a wheelchair user to space for the first time ever. Whether you're a casual fan or a spaceflight enthusiast, see how ...