Image taken by Kepler during the October test (Image: NASA Ames)
A reaction wheel of the type used on Kepler (Image: NASA)
An artist's concept of Kepler (Image: NASA)
Last August, it looked as if the NASA's Kepler space telescope was as good as scrap due to the failure of its attitude control system. Now the space agency proposes what it calls the K2 mission concept, which will give the unmanned probe "second light" by using the Sun to regain attitude control and allow Kepler to resume its search for extrasolar planets.
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