Sunday marks the shortest day of the year in the Northern Hemisphere, signaling the start of astronomical winter. In the ...

The winter solstice happens once a year when the Earth’s axis is tilted furthest from the sun in the northern or southern ...

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 winter solstice, the sun travels the shortest path through the sky, ...

The winter solstice marks the beginning of winter. Daylight will begin to increase after the solstice but the coldest ...

Sunday is the shortest day of the year north of the equator, where the solstice marks the start of astronomical winter. It’s ...

On Sunday, Dec. 21, at exactly 10:03 a.m. EST, the Northern Hemisphere's astronomical winter officially begins with the ...

The winter solstice also marks the first official day of winter in the Northern Hemisphere. Here's what to know this year.

Right now, as a passenger on planet Earth, you’re zooming through space at incredible speeds. But why can't you feel it?

The shortest day of the year in 2025, or the winter solstice, is on Sunday, Dec. 21 at 10:03 a.m. ET, according to the Old ...

The mysterious object 3I/ATLAS is making its closest pass to Earth today, and astrophysicist Avi Loeb joins us to discuss the ...

Earth’s spin is not as steady as it looks from the ground. As ice sheets melt and aquifers are drained, scientists now say the planet’s axis has shifted by more than 30 inches, a subtle but measurable ...

Physicists at NASA and Princeton generate electricity from the Earth's rotation: could wind energy be our energy source of ...