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Could aliens find Earth the same way we spot exoplanets?

You can tell a lot about a star by its twinkle. So far, thousands of exoplanets have been spotted orbiting distant stars, mostly by looking for "transits" as light from the host star dips when a planet passes in front of it. Now, scientists have examined whether Earth could be detected by other civilizations using the same technique, and according to their calculations, 68 known exoplanets are in prime positions to spot Earth and our rocky neighbors.
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