Is it a full moon tonight? Wondering what is the planet and bright star shining next to the moon? Here's what to know and how ...

The autumnal equinox arrives Monday, marking the start of the fall season for the Northern Hemisphere and the spring in the ...

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

Here's what happens as the direct rays of the sun slip south of the equator as the seasons change.

The equinox marks the arrival of fall in the Northern Hemisphere on Sept. 22. Are you ready for fall? The official arrival of fall is the autumnal equinox, which occurs in the Northern Hemisphere on ...

Bring out your sweaters, light a scented candle, and grab a pumpkin spice latte – the official start of fall is almost here.

The bottom half of the world, known as the Southern Hemisphere, is about to be treated to a partial solar eclipse that won't be visible in the US.

There are strong indications Washington is moving toward hemispheric retrenchment. The consequences for the Asia-Pacific ...

Did you see the bright star next to the moon? That was Venus, and part of a conjunction between the moon, Venus and the star ...

Northern Hemisphere’s fall or autumnal equinox can land between September 21 and 24, depending on the year. Its spring or vernal equinox can land between March 19 and 21.

This weekend's September new moon will rise amid a partial solar eclipse, giving way to the autumnal equinox. Here's when, ...

Skywatchers in the Southern Hemisphere are in for a treat this weekend with a partial solar eclipse on Sept. 21/22. New ...