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Cosmic Deja Vu -- Refsdal Supernova Reappears Exactly as Predicted

12/27/2015 10:43AM

Cosmic Deja Vu -- Refsdal Supernova Reappears Exactly as Predicted

Due to the effects of gravitational lensing, as predicted by Einstein's general theory of relativity, a distant and massive cluster of galaxies is acting like a time machine, replaying for the second time in 13 months the explosion of a massive star 9.3 billion years ago located near the edge of the observable universe.


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