It’s been a nail-biting few days for the planet-hunting community, after NASA announced late last week that its Kepler space telescope had unexpectedly switched to “emergency mode,” and was rapidly burning up its fuel some 75 million miles from Earth.On April 11, the space agency said that Kepler is now stable, and that the emergency has been lifted. NASA still hasn't clarified exactly what went wrong (although they can't blame the space debris orbiting Earth, as Kepler is just too far away), or whether the telescope can continue its mission.

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