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

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: ...

NASA’s Hubble Space Telescope imaged for the first time a chaotic and turbulent disk in visible light. It found the largest protoplanetary disk ever observed orbiting a young star with material ...

Mars once looked far more like Earth, with a thicker atmosphere and liquid water pooling on its surface, yet today it is a frozen desert where even a thin wisp of air struggles to hold on. NASA’s ...

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 ...