
Some year ago, astronomers suggested the existence of huge regions of the Universe made up of a kind of matter that cannot be seen, touched or smelt, but which provided a suitable density to the Cosmos. That something invisible should contain matter and, what is more, give lend meaning to the cosmic architecture would seem to be acontradiction. Astrophysicist Steven R. Majewski, from the University of Virginia (USA), has decided to move to where things can be seen better and has made observation his main tool for exploring the dark places that challenge our understanding. - What role do
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