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Published online 22 August 2006 | Nature | doi:10.1038/news060821-6
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Dark matter spied in galactic collision
Galactic crash reveals mysterious particles.
Astronomers have found the strongest evidence so far that mysterious particles that don't interact with light are lurking throughout the Universe.
Doug Clowe from the University of Arizona in Tuscon and his collegaues have spied a cluster of galaxies in which the centre of mass is shifted to the side of the bulk of observable material, in a relatively empty patch of sky.
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