The Earth became darker from 2001 to 2024, meaning it reflects less sunlight, a research team reports in the journal ...

On the day of the 2025 autumnal equinox, the sun rises almost exactly due east and sets to the west. The months that follow ...

Saturn takes center stage once darkness falls in October. Although the ringed world reached opposition and peak visibility in ...

Plus: Why are hurricanes so powerful? Are winds on other planets like they are on Earth? The answer, my friend, is blowin' in ...

The autumnal equinox arrives Monday, marking the start of the fall season for the Northern Hemisphere and the spring in the ...

Here's what happens as the direct rays of the sun slip south of the equator as the seasons change.

Autumn means shorter and cooler days, and longer nights, causing leaves on trees to change colors and fall to the ground ...

Monday, Sept. 22 is what many consider the first official day of fall: The fall equinox. The equinox marks the moment when ...

Fall often doesn’t kick in until late September or early October. Daytime highs can stay summer-like well into September, but crisp nights and the first real leaf color show up around the first week ...

Today is the autumnal equinox and we’re remembering the special date in the calendar and how we celebrated the season.