A new study about one of the most inexplicable places in the cosmos may offer the first proof that we are living in a multiverse.
(...) The Cold Spot, first found by NASA in 2004, is a strange place 1.8 billion light years across that doesn’t comfortably gel with existing cosmological models.
(...) The scientists, led by postgraduate student Ruari Mackenzie and Professor Tom Shanks in Durham University's Centre for Extragalactic Astronomy, think one possible hypothesis is that the Cold Spot resulted from a collision between our universe during its early days and another universe. The energy release of such an impact would have created the Cold Spot.
"We can't entirely rule out that the Spot is caused by an unlikely fluctuation explained by the standard model. But if that isn't the answer, then there are more exotic explanations. Perhaps the most exciting of these is that the Cold Spot was caused by a collision between our universe and another bubble universe. If further, more detailed, analysis of CMB [Cosmic Microwave Background] data proves this to be the case then the Cold Spot might be taken as the first evidence for the multiverse – and billions of other universes may exist like our own,” said Professor Tom Shanks.
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Peut-on tester la théorie du multivers?