NASA’s Kepler Space Telescope confirmed more than 2,600 exoplanets, including several located in the so-called habitable zone, where liquid water could exist. Worlds like Kepler-186f, Kepler-452b, and ...

Although astronomers have directly imaged a few dozen gas giants on the scale of Jupiter, Earth-sized planets are too small and dim to be directly imaged. That's not to say there's a shortage of Earth ...

It provides a dynamic, time-resolved view of planetary transformation, a missing link between young inflated worlds and the compact sub-Neptunes that populate the galaxy.

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 planet-hunting mission, the Kepler Space Telescope, has just discovered Kepler-452b, a planet that scientists are calling "Earth 2.0." Scientists said in a press conference Thursday that they ...

Scientists might have just found Earth's icy, distant cousin a few hundred million light-years away. HD 137010 b is one of ...