As the Solar System orbits the center of the Milky Way every 250 million years or so, it repeatedly passes through the galaxy ...

It circles a 'failed star' like a moon would. But scientists aren't quite sure what to call it.

Jupiter goes around its star in 180 days, which is a long time compared with most exoplanets we've discovered.

Since the first planet beyond our solar system was confirmed in the 1990s, astronomers have gone on to catalogue more than ...

This illustration shows the system around the star CD-35 2722, with the newly found moon-like object at the center. Credit: ESO/M. Kornmesser. Astronomers have found what may be the first convincing ...

A brown dwarf is wobbling on its path around a star in a manner that indicates it has its own giant satellite. This ...

Astronomers discovered a moon-like object orbiting a brown dwarf that's orbiting a star. Say that three times fast.

Scientists are documenting a planetary system in the Milky Way galaxy that is so starkly dissimilar to our own solar system ...

Can one click steal your data? Can farms produce both food and electricity? And why are total solar eclipses so rare despite ...

In a major boost to the search for life, Harvard astronomers have detected an atmosphere around a habitable-zone, Earth-like ...