This month marks the 20th anniversary of the first discovery of a planet orbiting a Sun-like star outside of our solar system – 51 Pegasi b. This event represented a watershed moment in astronomy, and ...

NASA's Kepler mission has discovered the first confirmed Earth-like planet in the hospitable zone of its parent star. The planet, called Kepler-452b, is around 60% bigger than our Earth. Kepler data ...

Our planet Earth is huge. Viewing it from space reminds us of how tiny we are, as our largest structures are not even visible when you take a picture of Earth from space. As big as our planet is, it ...

(CBS SF) -- NASA's Kepler Mission may have found our cousin with the confirmation of the first Earth-size planet in the "habitable zone" around a sun-like star. The newly discovered Kepler-425b is the ...

NASA's Kepler Space Telescope has discovered more than two thousand exoplanets since launching seven years ago, and a newly compiled catalogue of candidates could soon give this tally a sizeable boost ...

NASA said Thursday that its Kepler spacecraft has spotted “Earth’s bigger, older cousin”: the first nearly Earth-size planet to be found in the habitable zone of a star similar to our own. Though NASA ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. NASA said Thursday that its Kepler ...