December's winter solstice marks the shortest day of the year. Here's the science behind Earth's tilt, fading daylight, and why winter cold lingers even after light returns.

Did you know that the winter solstice has been observed by humans for over 5,000 years From ancient stone circles to ...

For many people in the US, winter arrived early. Blisteringly cold temperatures have colored the landscape white or gray, even though it still isn't officially winter yet, and won't be until Sunday ...

It may feel like the days can't get any shorter, but we still haven't yet reached the winter solstice, which is the shortest day of the year. The solstice marks the moment the sun shines at its most ...

The Summer Solstice 2025 in the Northern Hemisphere will occur on Friday, June 20, 2025, at 10:42 PM EDT (0242 GMT on June 21). This astronomical event marks the start of summer and the longest day of ...

The Newgrange Winter Solstice livestream returns for 2025, letting viewers around the world witness the phenomenon from their ...

Editor’s note: “Behind the News” is the product of Sun staff assisted by the Sun’s AI lab, which includes a variety of tools such as Anthropic’s Claude, Perplexity AI, Google Gemini and ChatGPT. The ...

Shortening days and falling temperatures are heralding the arrival of winter across the Northern Hemisphere. This year, the northern winter solstice falls on December 21 at 11:19 p.m. ET (04:19 UT).