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

Winter officially arrives at 10:03 a.m. EST on Dec. 21, bringing the year's longest night and shortest day. While astronomers ...

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

The December solstice marks a turning point in the year, though what that turning point means depends entirely on where […] ...

There are a host of celestial events to get excited about next year – including a total solar eclipse. Abigail Beall is ...

The enigmatic Maya calendar synchronizes all visible planets, thus solving an astronomical puzzle that had remained unsolved ...

This astronomical event will reach its peak on the night of 13-14 December, with up to 120 meteors per hour expected Unlike most meteor showers that originate from comets, the Geminids are caused by ...

When we think of the start of fall, we often picture cooler temperatures, changing leaves and shorter days, but when exactly fall begins depends on whether you're using the astronomical or ...

Here are the peak dates of the 2026 meteor showers. Jan. 2-3: Quadrantid meteor shower: Quadrantids are known for their short, intense peak. They are best seen in the Northern Hemisphere. April 21-22: ...

December's so-called "Cold Moon" in 2025 will be the supermoon that will close the astronomical calendar of the year. This phenomenon occurs when the full Moon coincides with its closest point to the ...

Many across the Northern Hemisphere have different opinions about when winter officially begins. Yet meteorologists have remained consistent about when the season actually starts in December.