![]() There is more dark matter in the Universe than visible matter, but it is extremely elusive it does not reflect, absorb or emit light, making it invisible. ![]() The results, published in the journal Science on 27 March 2015, show that dark matter interacts with itself even less than previously thought, and narrows down the options for what this mysterious substance might be.ĭark matter is a giant question mark looming over our knowledge of the Universe. Astronomers using observations from the NASA/ESA Hubble Space Telescope and NASA’s Chandra X-ray Observatory have studied how dark matter in clusters of galaxies behaves when the clusters collide. ![]()
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