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If it happens, it would be the first time such an event was predicted by scientists. They say two stars in the constellation Cygnus will eventually merge and explode.
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A decade after phasing out celestial navigation from its academy courses, the U.S. Navy has restarted that formal training. The shift comes at a time of growing anxiety over possible threats to GPS.
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West Kentucky Community and Technical College's Challenger Learning Center hosts a 45-minute presentation in a STARLAB portable planetarium. It's a…