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animation of signals from alien civilizations

CAN YOU HEAR ME NOW?  Electromagnetic signals (blue circles) from alien civilizations will continue traveling through the Milky Way even after the aliens are gone. The appearance of a doughnut hole represents when a civilization dies out.

Proxima Centauri

TEMPER TANTRUM  Proxima Centauri released a gigantic flare on March 24, 2017, fizzling hopes that this nearby star’s Earth-mass planet is habitable.


BLUE MARBLE  From the outside, you would never know how hostile Venus’ surface is. This false-color image of Venus from the Akatsuki spacecraft shows a cloud-covered atmosphere as complex and dynamic as Earth’s.

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