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

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

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

A pull in the right direction ...

Carbon released from Earth's spreading tectonic plates, not volcanoes, may have triggered major transitions between ancient ...

Ice in the Arctic and Antarctica plays a critical role in maintaining life on Earth, and it is melting faster than previously thought. This is threatening our planet with potentially massive sea-level ...

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

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

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