Mathematicians calculated where the planet might be based on its effects on Uranus, and astronomers searched for less than an ...

Neptune and Uranus are the seventh and eighth planets from the sun, and as such share a lot of the same characteristics.

Scientists believe they have discovered evidence of a hidden planet existing beyond Neptune, which they have named 'Planet Y'. Recently, a study analyzing the orbits of Kuiper Belt objects indicated ...

It’s been nearly 2 centuries since a planet was discovered in the solar system. But now scientists think they’ve uncovered ...

Webb uncovers methane on Makemake, showing the icy dwarf planet is more active than once thought - just like Pluto.

Sean is scared of flying out to visit Neptune./The kids celebrate Jet's Earthday birthday. Sean's nervousness about flying out to visit the remote Neptune is soothed by Jet's suggestion - an ...