Neptune is big, it’s blue, and it is a planet that can tear you apart if you happen to drop into one of its massive, Earth-sized storms. While it might look calm and breathtaking from afar, Neptune is ...

The planet K2-18b is located about 120 light-years away from Earth, in the direction of the constellation Leo. It orbits a red dwarf star and has a mass approximately eight times that of Earth, with a ...

Planet Nine was previously suggested as a possible explanation for distant orbital clustering. It was thought to be ten times Earth’s mass, orbiting far beyond Neptune.