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Comet Neowise is a dazzling sight, but it's also a reminder of how woefully unprepared we are for dangerous asteroids

Comet Neowise is a dazzling sight, but it's also a reminder of how woefully unprepared we are for dangerous asteroidsA NASA telescope spotted Comet Neowise by sheer luck three months ago. If the comet were a killer asteroid, that may have been too late.




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