Mysterious ‘dark matter’ is mapped at last – a ‘cosmic web’ spanning a billion light years

Posted on January 9, 2012


‘Dark matter’ is a theoretical – and controversial – substance which is undetectable by telescopes on earth, but thought by some scientists to account for up to three quarters of the mass of the whole universe.

But scientists have mapped it for the first time, detecting dark matter by the ‘ripples’ it causes in space and time.
Read more:–showing-cosmic-web-spanning-billion-light-years.html#ixzz1j0JZwbqF

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