23 jul. 2015

NASA Announces Discovery of Earth-Like Extrasolar Planet

NASA has just announced the discovery of an earth-like planet orbiting a star similar to our sun, and within the star's habitable zone. The planet has been designated Kepler-452b, and is the first such planet ever discovered. So far, nearly 4000 planets have been discovered in so-called 'goldilocks zones' around distant stars--regions where they are neither too hot nor too cold to sustain life. But all of these planets have been determined to be either very small, very large, or gas giants. Kepler-452b is a "bigger cousin of Earth." It has a 385 day orbit and is 5% farther from its star than Earth is from the sun. Its parent star is Kepler-452.

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