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First Light Detected from Gravitational Wave Event on This Week @NASA – October 20, 2017

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For the first time, NASA scientists have detected light tied to a gravitational-wave event. The gravitational wave – caused by an explosive merger of two neutron stars, about 130 million light-years from Earth – produced a gamma-ray burst and a rarely seen flare-up called a "kilonova". The phenomenon was captured by our Fermi, Swift, Hubble, Chandra and Spitzer missions, along with dozens of NASA-funded ground-based observatories. Also, Trio of Station Spacewalks Completed, Fresh Findings from Cassini, and Test of SLS RS-25 Flight Engine!

This video is available for download from NASA's Image and Video Library: https://images.nasa.gov/#/details-NHQ_20171023_This%20Week%20@%20NASA.html

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