Saturday, 13 December 2014

Dark matter signal: Weird X-ray emission discovery could usher in new age of astronomy

Astronomers might have finally detected a signal emitted from dark matter - the hypothetical material that makes up most of the universe - and if confirmed, this would lead to a new era in astronomical study. Researchers looking at European Space Agency data from the XMM Newton spacecraft found a strange spike in X-ray emissions coming from the Andromeda galaxy and the Perseus galaxy cluster. These signals do not correspond to any known particle or atom, so could have been produced by dark matter. The findings will be published in Physical Review Letters. The presence of dark matter is a hypothetical approach to explaining the physics problem of discrepancies in the mass of objects measured based on gravitational effects, and their mass measured on observable matter. When physicists study galaxies and the movement of stars, they face an intrinsic problem – if they only take visible matter into account, equations do not add up. This means there must be something missing, so they deduced there is likely to be an invisible kind of matter that does not interact with light but does so with its surroundings – and this is called dark matter. Dark matter is hypothesised to make up over 84% of the total matter of the universe.READ MORE AND SEE MORE PHOTOS LINK- galaxy

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