Dec. 21 marks the darkest day of the year in the Northern Hemisphere and the start of astronomical winter, known as the winter solstice.

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, ...

One story rose above all the others — new and older telescopes are putting us on the cusp of monumental discoveries about our universe.

Prepare for a spectacular 2026 skywatching calendar featuring a total solar eclipse, brilliant meteor showers, and a massive ...

Proven methods for teaching the readers who struggle most have been known for decades. Why do we often fail to use them?

Louisiana has a law against state officials having two jobs, but legal experts said enough information wasn’t yet available ...

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

Today marks the shortest day and longest night of the year as the sun reaches its lowest point in the Northern Hemisphere sky ...

When is winter? Weather forecasters in the Northern Hemisphere will tell you Dec. 1 through the end of February, which is known as meteorological winter. But based on Earth's tilt and orbit around the ...

Yes, the darkest day of the year is here, but that means brighter days are ahead. Sunday is the shortest day of the year north of the equator, where the solstice marks the start of astronomical winter ...

Activated on December 5, 2025 and headquartered at Fort Bragg, N.C., U.S. Army Western Hemisphere Command is an operational warfighting theater command headquarters that is focused on homeland defense ...

Everything you need to know about January’s full Wolf Supermoon — including exactly when it’s full and the best evening to ...