Yellowstone's lake's ice cover has remained unaffected by increasing temperatures due to increased snowfall. But this could make it vulnerable to a sudden shift.
An erupting star system in Orion has finally provided an answer to the mystery of how stars fed for over 100 years, something that has puzzled astronomers for almost as long.
Boeing's Starliner capsule is scheduled to launch astronauts for the first time ever on May 6. Here's how to watch that historic liftoff, as well as key events before and after it.
SES plans to buy fellow satellite operator Intelsat, in a deal that could help the combined company compete with SpaceX's huge Starlink broadband network.