NASA astronauts Suni Williams and Butch Wilmore are expected to return to Earth Tuesday afternoon after more than nine months ...

NASA astronaut Don Pettit captured this stunning long-exposure view of Earth and stars from space at night from the International Space Station.

Scientists have identified two enormous mountains hidden deep beneath the Earth’s surface, each standing an extraordinary 620 miles (1,000 kilometers) tall—more than 100 times taller than Mount ...

Look up what’s happening in your area. Earth’s warming could trigger sweeping changes in the natural world that would be hard, if not impossible, to reverse. Representative Andrew Garbarino of ...

It's rare for any observatory to directly image a planet beyond our solar system, called an exoplanet, but the powerful James ...