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In 2008, hundreds of galaxy clusters were analysed to be drifting towards a section of the edge of the known universe, faster than science could account for. Almost like something beyond that point was… pulling them, or had once pulled them, with a reach that extends across billions of light years. This episode dives into the mystery of Dark Flow What do we know about it? What could be causing it? And what are its controversial ramifications on cosmology?
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