Moons are either gravitationally captured if they are within what's called a planet's Hill sphere radius, or they're formed along with a solar system. Objects exert a gravitational force of attraction ...

On Mercury, craters are named after “artists, musicians, painters and authors who have made outstanding or fundamental ...

NASA's record-setting spacecraft was just 3.8 million miles from the sun's surface—the closest any human-made object has ever ...

It’s going to be a front-loaded, exciting year for all things celestial, lunar and planetary. Space lovers are going to take ...

Sometimes, it's hard to remember that Earth is constantly being bombarded by literally tons of space debris daily. The larger ...

The 2025 skywatching guide includes a rare sunrise solar eclipse, an occultation of Mars and three supermoons. Here are the ...

Directly above our heads, Jupiter will be signing bright. To the east, Mars will reach opposition in mid-January.

Saturn's intricate structure, interactions, and diverse components make it a fascinating 'mini solar system' within the ...

See the dates, times and nicknames of each full moon, plus details on the other big sky events on tap in the new year.

Unfortunate timing The first panel of this artist's concept depicts how Uranus's magnetosphere – its protective bubble – was ...

This year will mark a turning point in humanity’s relationship with the moon, as we begin to lay the foundations for a ...

On January 15, throughout the night, observers will be able to see Mars reach its full phase, called opposition. This happens ...