NASA is working to repair failed orientation wheels on the Kepler telescope in an effort to remobilize its exoplanet hunting mission. The $600 million telescope has discovered 134 confirmed planets during its mission and more than 3,000 candidates waiting to be observed by scientists, who estimate that at least 90% of the planet candidates are indeed planets. If attempts to repair Kepler's wheels are unsuccessful, NASA may task the spacecraft with a scanning mission.

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