Former NASA astronaut and Columbia University professor Mike Massimino joins TODAY to share his unique perspective to explain ...

According to Britannica, the fall equinox is one of two moments in the year when the sun is exactly above the equator. The ...

During an equinox, places around the globe experience nearly equal amounts of daytime and nighttime. The second occurrence ...

The official first day of fall, otherwise known as the autumnal equinox, is this weekend in the Northern Hemisphere.

On Sept. 22, the fall equinox formally heralds in autumn and marks the end of summer in the Northern Hemisphere.

If you get up early enough, you can experience an equinox sunrise. The autumnal equinox heralds the arrival of fall in the northern hemisphere.

As the sun sets, it lines up perfectly with Chicago's east-west streets and is framed by downtown skyscrapers. The possible ...

MYRTLE BEACH, SC (WMBF) - Today is the first day of Autumn but why is the first day of Fall different each year?

New England marks the fall season with cool temperatures, coastal flood potential, and a mix of sun and clouds.

Grab some crystals for the autumn equinox and program them with your fall intentions, or create a witchy autumnal altar (complete with baskets, apples, fall foliage, pumpkins, or other special ...

The unseasonable heat is finally on its way out as we will welcome Fall with temperatures in the 60′s on Sunday.

The fall season is almost upon us. Later this month will be the fall equinox, which signifies the official beginning of autumn. But what exactly is the meaning of the term equinox? And when is the ...