Ever since the International Astronomical Union recognized Haumea and Makemake as dwarf planets in 2008, University of Maine ...

Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the ...

Lava planets, some no larger than Earth, challenge everything we know about planetary science. These extreme worlds orbit so ...

Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the ...

Webb's Near-Infrared Camera view shows at least two or three distinct outflows of gas — jets stretching in different directions — plus a disk of compressed material forming along the middle, likely ...