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

The Cuban government is directly involved in Russia's war against Ukraine by providing thousands of Cuban mercenaries, making ...

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 ...

Regulus, a distant star, Venus and our moon will be visible during a conjunction tonight, and how Californians can best see it.

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

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

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.

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

Much as we may treasure and proclaim our independence, we actually live in a protective bubble called the heliosphere.

Here’s what experts are learning about this chaotic period leading up to menopause—including what causes its symptoms, when ...

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 ...