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Following are links to various U.S. government press releases.

WHITE HOUSE VIDEO

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Friday, March 11, 2016

Frontier Fields Galaxy Cluster MACS J0717

Frontier Fields Galaxy Cluster MACS J0717: 'Frontier Fields' galaxy cluster MACS J0717, one of the most complex and distorted galaxy clusters known, is the site of a collision between four clusters. It is located about 5.4 billion light years away from Earth.