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

The monsterous 85-mile-wide comet C/2014 UN271 isn't just the largest icy rock in the Oort Cloud, it's the second most ...

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

In the latest shutdown, the cosmic ray subsystem experiment on Voyager 1 and Voyager 2’s low-energy charged particle instruments were taken offline in March. One especially power-hungry instrument – ...

Space artists can sometimes stretch scientific data for a bigger visual bang. At New York's natural history museum, they ...

Because of potential water and a source of heat, Olympus Mons has been suggested as a place to look for potential alien life; ...

Astronomers anticipate an unprecedented view of the solar system as the Rubin Observatory begins to scan millions of hidden ...