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 ...

NASA’s Kepler Space Telescope confirmed more than 2,600 exoplanets, including several located in the so-called habitable zone ...

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: ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American The prolific planet-hunting spacecraft that ...

Space is still the final frontier, and NASA has announced that the frontier is more vast than we realized. The NASA Kepler mission has discovered 715 planets set up in multiple-planet systems a lot ...