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“As a fast radio burst travels through space, it gets distorted by the plasma and gas of the cosmos.

‘We can measure this distortion very, very precisely,’ Masui says. ‘So for every one of these bursts, we know exactly how much matter it passed through.’

‘It carries a record within it of the structure of the universe that it has traveled through on its way to get from the source to us,’ he adds.”

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@aral the catch is that radiowaves only interact with "normal" matter, so this will not solve the issue of dark matter / dark energy...

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