In the stratosphere over Siberia, temperatures recently jumped nearly 100 degrees Fahrenheit, shoving the polar vortex off its North Pole perch.

It's popularly understood that no one can hear you scream in space, and yet, scientists have captured some pretty strange ...

Lightning happens all the time, but certain parts of the world get far less of it than others, including near the North Pole. Lightning requires atmospheric instability, something that’s set up ...

Most people have never seen the Little Dipper, because most of its stars are too dim to be seen through light-polluted skies.

The star Polaris marks the North Celestial Pole in our sky, around which all other objects in the heavens appear to rotate.

The new moon occurs on June 25. A day later, Mercury reaches its highest point in the evening sky, and on June 27, the young ...