The Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS) has recently announced the results of an analysis of five years of observations of 10 million galaxies. The survey covered four different patches of sky, each about 1° by 1°. As the light from these galaxies travelled towards the 340 Megapixel camera employed by CFHT it was bent by the gravitational effects of dark matter. And that gravitational lensing allowed CFHTLenS to generate the largest dark matter map of the universe to date. Check out the image below. It’s amazing.
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