NASA scientists using data from the Chandra-X space telescope has confirmed the existence of dark matter. The little-known dark matter - deemed to composed 80-90% of all the matter in the Universe - was observed when two giant gas clouds collided, an event observed by Chandra-X, the Hubble Space Telescope, the Very Large Telescope and the Magellan Telescope. This is the first direct evidence that the the-theoretical dark matter is not just a stuff of theoretical astrophysics.
Picture credit: www.astro.princeton.edu
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