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

Explaining equinoxes Equinoxes occur in between the solstices and signal the beginning of spring and autumn. The term equinox ...

EDT on Sunday, September 22, 2024, the sun will cross the celestial equator, putting the magnetic fields of Earth and the ...

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

Astronomical fall has officially arrived in the northern hemisphere. The suns most direct rays have been slowly shifting southwards on the planet.

The autumnal equinox heralds the arrival of fall in the northern hemisphere, and it's just around the corner. Here's what to ...

1 and winter on Dec. 1. Astronomical seasons depend on how the Earth moves around the sun. Equinoxes, when the sun lands ...

The exact time of the fall equinox changes slightly each year. This year, the equinox arrives Sept. 22 at 8:43 a.m. Eastern ...

Twice a year, the sun doesn’t play favorites. Everyone on Earth is seemingly on equal status – at least when it comes to the ...

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

This Sunday, September 22, autumn begins in the northern hemisphere, from an astronomical phenomenon called autumnal equinox, ...