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Hi neighbor: NASA telescope finds closest exoplanet yet

Hi neighbor: NASA telescope finds closest exoplanet yet

Move over Kepler-452b, there's a new exoplanet on the block. Astronomers have discovered a rocky planet outside of our solar system using NASA’s Spitzer Space Telescope, NASA announced Thursday. The exoplanet named HD 219134b is about 1.6 times the size of Earth and scientists are calling it a “gold mine of science data.” While it’s more than 21 light-years away it is actually the closest confirmed exoplanet found outside our solar system. "Most of the known planets are hundreds of light-years away. This one is practically a next-door neighbor," said Harvard-Smithsonian Center for Astrophysics astronomer Lars Buchhave. Scientists predict HD...

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