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An artist's composite of the Kepler telescope is seen in this undated NASA handout image. Two of Kepler's four gyroscope-like reaction wheels, which are used to precisely point the spacecraft, have failed and NASA reported on August 15, 2013, that it is ending attempts to fully recover the spacecraft.  REUTERS/NASA/Handout via Reuters  (UNITED STATES - Tags: SCIENCE TECHNOLOGY) ATTENTION EDITORS - FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS - RTX12MWV NASA/Reuters
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