Astronomers have discovered an Earth-size planet orbiting an ultracool red dwarf star similar in size to Jupiter. The red dwarf, located some 55 light-years away, is 100 times less bright than the sun ...

For centuries our solar system was the only planetary system known to humans. We had no proof other worlds existed beyond those in our own cosmic backyard, and we imagined that if other planetary ...

Astronomers have recently tracked a massive rogue planet, referred to as a “super-Jupiter,” that is drifting toward our solar neighborhood. This discovery has captured the attention of the scientific ...