New research shows Uranus’ fierce radiation belts were a short-lived blast from a solar storm, reshaping what Voyager 2 ...

Earth's climate has swung between ice ages and warmer periods for millions of years, driven by subtle changes in our planet's orbit and axial tilt.

When the Sun reaches its lowest point in the sky, which always occurs around December 21 for those of us in the northern ...

The Earth's climate has been changing for millions of years under the influence of the gravity of neighboring planets. A new ...

When is winter? Weather forecasters in the Northern Hemisphere will tell you Dec. 1 through the end of February, which is ...

The winter solstice, or the December solstice, is the point at which the path of the sun in the sky is farthest south. At the ...

PM? The winter solstice is still 2 weeks away, but sunsets in southern Colorado have already started getting later. Here's ...

The longest night of the year is nearing as we get closer to the first day of winter. Here's when to expect the season to ...

December brings an array of night sky events including a mysterious interstellar comet, the Geminids meteor shower and winter solstice.

By trapping huge amounts of water on land, big dams built by humans have slightly changed how Earth spins and where its poles ...