Detailed Map of Dark Matter Announced

April 16, 2015 10:09 PM

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Scientists from the Dark Energy Survey (DES) collaboration announced a new and precise map of the distribution of dark matter at the annual meeting of the American Physical Society. Using a very sophisticated camera containing 570 million pixels, scientists imaged distant galaxies, looking for tiny distortions in the galaxies' shapes. This distortion is caused by a phenomenon called gravitational lensing.

Gravitational lensing is a prediction of Einstein's theory of general relativity and was confirmed in 1919. In essence, gravitational lensing is caused when the presence of mass bends space and thereby alters the path of a beam of light. In this manner, a distant object can have its shape distorted ...

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