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NASA's TESS satellite could find planets by 2020



The excitement among the participants who gathered for the launch of TESS, NASA's youngest celestial observer, on April 18 was understandable. Equipped with four telescopes, the satellite will orbit for two years and photograph more than 200,000 stars, dozens within 10 light years of Earth. Sara Seager, Deputy Science Director of the Mission, was watching with her family from Cape Canaveral that day, knowing exactly what was at stake. "It is fair to say that TESS will find a whole range of planets in the habitable zone," she says. In plain English: We could only find one planet that will house life until 2020.


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