Astronomers have found yet another quasi-moon companion of Earth in its orbit around the Sun believed to be a chunk of our ...

Earth has a newly discovered—albeit temporary—companion in its journey around the sun. In research published this month in ...

Earth is the only planet in our solar system with a single moon, making it a rare phenomenon for a planet of its kind.

The Earth stands alone in the solar system as a habitable world, as far as we know. But that doesn’t mean we don’t get visitors, most often in the form of (usually harmless) asteroids. Some even ...

As of Monday, Sept. 22, the moon phase is Waxing Crescent, and according to NASA's Daily Moon Observation, there's just 1% ...

The moon and Venus will shine vividly alongside a bright star in the early morning in a celestial rendezvous that should be visible across the U.S.

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

Saturn will put on a show for professional and backyard astromers alike, and be the brightest and closest it has been to ...

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 ...