NASA has announced the discovery of an Earth-like planet orbiting a Sun-like star that shares several other similarities with ...

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 discovered a potentially habitable new planet that is around 146 light-years away and is actually remarkably similar to Earth with just one stark difference: it could be colder than ...