Out in the depths of space, in the huge swaths of blackness between star systems, you can find lonely, wandering rogue planets. These planets don’t orbit around a star but meander through the cosmos ...

Could a tiny planet, with weak gravity, harbor life? A team of scientists from Harvard University say they’ve found the smallest possible mass a planet could be before its lack of gravitational forces ...

Illustration of Barnard's Star as seen from the surface of one of its planets. Credit: International Gemini Observatory/NOIRLab/NSF/AURA/R. Proctor/J. Pollard Just 5. ...

(Correction: An earlier version of this story misstated how far Pluto is from the sun. The correct number is 3.7 billion ...

WISPIT 2b, a gas giant five times more massive than Jupiter, is the first planet of its kind to be observed growing inside ...