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May 28, 2021 07:00 am

New Dark Matter Map Reveals Cosmic Mystery

New submitter rundgong shares a report from the BBC: An international team of researchers has created the largest and most detailed map of the distribution of so-called dark matter in the Universe. The results are a surprise because they show that it is slightly smoother and more spread out than the current best theories predict. The observation appears to stray from Einstein's theory of general relativity -- posing a conundrum for researchers. The results have been published by the Dark Energy Survey Collaboration. Using the Victor M Blanco telescope in Chile, the team behind the new work analyzed 100 million galaxies. The map shows how dark matter sprawls across the Universe. The black areas are vast areas of nothingness, called voids, where the laws of physics might be different. The bright areas are where dark matter is concentrated. They are called "halos" because right in the centre is where our reality exists. In their midst are galaxies like our own Milky Way, shining brightly like tiny gems on a vast cosmic web. According to Dr Jeffrey, who is also part of a department at University College London, the map, clearly shows that galaxies are part of a larger invisible structure. "No one in the history of humanity has been able to look out into space and see where dark matter is to such an extent. Astronomers have been able to build pictures of small patches, but we have unveiled vast new swathes which show much more of its structure. For the first time we can see the Universe in a different way."

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