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How to spot aliens? Look at Earth, scientists propose.

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If astronomers had been to look at Earth from one other solar system, might they inform that our planet is teeming with life? By analyzing Earth in the identical method that we take a look at exoplanets — planets orbiting different stars — we would enhance our probabilities of detecting alien organisms on distant worlds, researchers not too long ago urged.

Since 1999, a course of for recognizing exoplanets, often known as the transit technique, has revealed 1000’s of worlds by measuring fleeting dips within the brightness of the celebrities that the planets orbit. Nobody is aware of whether or not or not these worlds host life, but when scientists had been to look at Earth utilizing the transit technique, they’d possible spot definitive signatures of life.


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