The autumn equinox, which comes around every September for the Northern Hemisphere, marks the official astronomical start of ...

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

Though the autumnal equinox is Sunday, marking the astronomical start of fall, Chicago-area residents wouldn't know without ...

Sean 'Diddy' Combs arrested; details of Titan's implosion revealed ...