The winter solstice is the moment when the Earth is tilted farthest away from the Sun. Because of this tilt, the Sun sits at its lowest point in the sky. This creates the shortest day of the year, ...

Although temperatures have been dropping for weeks, winter doesn’t officially begin until Saturday. Subscribe to read this story ad-free Get unlimited access to ad-free articles and exclusive content.

The winter solstice—a day many hear about, but may not completely understand. Most people know it’s the shortest day of the year, but they may not know the science behind it. Why does it happen, ...

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

Though temperatures have already started to drop in some parts of the country, winter doesn't officially begin until mid-December. Here's what to know about the winter solstice, the astronomical start ...