Astronomers may have discovered a new type of planet beyond our solar system, according to new research. The exoplanet, named ...

Debate has raged for two decades over whether Pluto should be considered a planet. Some want President Trump to take action via executive order.

Using the James Webb Space Telescope, astronomers have discovered an example of a new class of exoplanet, and it smells like ...

Relative sizes of the newly discovered habitable-zone planets and Earth. Left to right: Kepler-69c, Kepler-62e, Kepler-62f and Earth (except for Earth, these are artists' renditions). Image credit: ...

Astronomers have taken a closer look at one of the strangest planets ever discovered, and it is raising more questions than ...

The race to compile a sort of catalogue of the planets orbiting distant Suns is intensifying, with the upcoming Nancy Grace Roman Space Telescope, for instance, set to spot tens of thousands of such ...