Almost 10 years ago, a NASA spacecraft was able to take several photos of Pluto, known for decades as a planet before it was ...

K2-360 is a newly found planetary system with a super-dense planet, likely the core of a former larger world, shaped by ...

"L 98-59 c could be the first planet smaller than 2 Earth radii with a definitively detected atmosphere," a team of ...

A powerful new observatory is the best hope yet for finding the elusive Planet 9, a large planet that some scientists say is ...