For anyone curious about what it's like to stand on another planet, Earth offers a few convincing previews. Mars may be 140 ...

Earth’s atmosphere is slowly leaking into space, and new research shows some of it reaches the Moon, where it may be ...

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

All of these new developments don’t mean that the sun is ready to give up its fusion monopoly, as many significant ...

"This is the largest solar radiation storm in over 20 years," the Space Weather Prediction Center said on Monday.

Our planet is unique for its ability to sustain abundant life. From studies of the rock record, scientists believe life had already emerged on Earth at least 3.5 billion years ago and probably much ...

By mapping areas where seismometers in southern California detected sonic booms, researchers at Johns Hopkins University and ...