Invisible world discovered


Related images(click to enlarge) Usually, running five minutes late is a bad thing since you might lose your dinner reservation or miss out on tickets to the latest show. But when a planet runs five…

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Our galaxy might hold thousands of ticking ‘time bombs’


Related images (click to enlarge) In the Hollywood blockbuster “Speed,” a bomb on a bus is rigged to blow up if the bus slows down below 50 miles per hour. The premise — slow down…

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