The threat of a civilization-ending asteroid hitting the Earth is well-known — as a plethora of Hollywood movies on the subject has demonstrated. But there is a less-known threa ...

At the International Earth Rotation and Reference Systems Service in Paris, a quiet calculation takes place several times a ...

Earth’s physical systems are shifting at a pace that would have seemed implausible a generation ago, from record heat to subtle changes in the length of a day. The planet is warming, water cycles are ...

Of the five asteroids, one will be closer to Earth than the moon, according to NASA.

It’s a homecoming to rock your world. A 1,323-pound spacecraft is expected to rip through Earth’s atmosphere Tuesday night, warns NASA of the incoming juggernaut. “The U.S. Space Force predicted that ...

Arctic sea ice levels are crucial to Earth's climate because, without the ice reflecting sunlight, more heat energy goes into the oceans.

Scientists explain how simple chemicals, deep sea vents, and meteor impacts may have helped life begin on Earth.