Discover the astronomical event that marks the beginning of fall in the Northern Hemisphere and spring in the Southern Hemisphere.

Although residents still have a ways to go before the warm weather fades, it's always exciting to know when summer ends and fall begins.

The official start to the fall season, the autumnal equinox, occurs on Sunday, Sept. 22. What exactly happens during the ...

Ready or not, the fall season arrives this weekend, and there's a few important things you'll want to keep in mind as we move ...

But all good things must come to an end, and summer cannot last forever. There’s both a simple reason and a more complicated one. The simple reason is that it can’t always be summer because the Earth ...

The fall equinox — this Sunday at 8:43 a.m. — marks the end of summer for Ontario. At least from an astronomical point of ...

During the autumn equinox, the sun sits directly above the equator resulting in equal hours of day and night. This year, it ...

The first day of fall arrives on Sunday with the autumn equinox, starting shorter, colder days because of Earth's axis and ...