For a long time, scientists assumed that Earth's water was delivered by asteroids and comets billions of years ago. This ...

The object dubbed Earth's "second moon" is actually a quasi-satellite that's accompanied the planet since 1957 — not a true ...

Earth's magnetic field was struck by a "severe" solar storm Monday (Jan. 19), triggering vibrant auroras in the U.S. and ...

Falling space junk is becoming a real-world hazard, and scientists have found a clever new way to track it using instruments ...

A bullet-speed experiment reveals that the Earth's inner core may be softer and more dynamic than previously thought.

Our weekly roundup of the latest science in the news, as well as a few fascinating articles to keep you entertained over the ...

It was quite a leap. Conspiracy theorists are being brought back down to Earth after NASA scientists debunked a wild claim ...

A Pew Research poll shows partisan split over U.S. scientific leadership, with Democrats far more concerned about losing ...

For more than 25 years, humans have lived and worked continuously aboard the International Space Station, conducting research ...

Earth's rotation is randomly speeding up, and nobody is quite sure why. These speedups, which have occurred several times over the last few years, haven't had any effect on daily life, but they also ...