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An undated artists concept provided by NASA shows the Keplar Spacecraft moving through space. On April 10, 2016, NASA is trying to resuscitate its planet-hunting Kepler spacecraft, in a state of emergency 75 million miles away. The treasured spacecraft, responsible for detecting nearly 5,000 planets outside our solar system, slipped into emergency mode sometime last week. The last normal contact was April 4. Ground controllers discovered the problem right before they were going to point Kepler toward the center of the Milky Way. (Photo by AP Photo/NASA)
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