"We were very surprised to see that the same tiny plasma jets appear to be driving both the fast and the slow solar wind." ...

There's a new race in space, but it's not where you might think. It's happening close to home – in the nearest bit of space, ...

Mt Kilimanjaro, the Rwenzori Mountains and Mt Kenya are Africa’s three highest points. Here’s how to stand atop the world’s wildest land.

To see the northern lights in Colorado, a KP index of 5 or higher is usually needed. The KP index measures geomagnetic ...

The Army was one of 28 government agencies authorized to fly helicopters near Ronald Reagan National Airport before its Black Hawk helicopter collided with an American Airlines passenger jet last week ...

Something strange is happening in the night sky tonight—the Moon is climbing higher than usual, reaching one of its most ...

The moon's ascending node (the point in the sky where its orbit crosses the ecliptic from south to north) is moving westward ...

On the evening of Friday, February 7, skywatchers across central Florida and southern Texas will be treated to a rare celestial sight as the waxing gibbous moon rises unusually high in the sky.