The planet's seasons are not as immutable as previously thought. Turns out there are parts of the world that have different seasonal timing than those regions even just a short distance away. This ...

The fall season officially begins on Monday, Sept. 22, 2025, with the autumnal equinox. An equinox occurs when the Earth's axis is tilted neither toward nor away from the sun, resulting in nearly ...

WASHINGTON — While the temperatures may not reflect it just yet everywhere, fall is officially upon us. The autumnal equinox, which comes around every September for the Northern Hemisphere, marks the ...

Fall does not begin when the air turns crisp or when pumpkin spice shows up. It begins at a precise moment in space. In 2025, that moment lands on Monday, September 22, when the center of the Sun ...

Day and night will get equal time for a brief moment Monday as much of the world heads into fall. The autumnal equinox marks the start of the fall season for the Northern Hemisphere and the spring in ...

Right now, we're zooming through space at incredible speeds, so why aren't we dizzy or flying off into space?  An expert ...

Are you ready for fall? The official arrival of fall is the autumnal equinox, which occurs in the Northern Hemisphere on Monday. After a hot summer, the September equinox marks a welcome shift in the ...