An object thought to have come from another star has been seen entering the solar system at high speed, and is expected to ...

Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...

For years, astronomers have been searching for a mysterious ninth planet lurking in the dark outer reaches of our solar ...

The sun rises from the east, and sets in the west - this is a well-established fact for the longest time, and this is due to ...

To get a glimpse of the “Swift Planet,” EarthSky suggests waiting for the sun to set before looking west for the planet ...

New research says that Earth could be ejected from our solar system if a passing star was to come close enough.

Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory ...

Wide-orbit planets are fairly common according to the study, and there's a good chance we have one of our own.

NASA’s James Webb telescope captured its first direct image of a distant gas giant, revealing groundbreaking insights into ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

Sedna will make its closest approach to the Sun in 2076, giving us a rare opportunity to visit the planetoid before it drifts ...

A meteor shower, a planet sighting, and a full moon. Here's how to see all of space's eye-catching activity in July.