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July 11, 2018

About 20 observatories participated in follow-on observations of the Sept. 22, 2017 detection.

On Sept. 22, 2017, NSF’s IceCube Neutrino Observatory alerted the international astronomy community about the detection of a high-energy neutrino. Approximately 20 observatories on Earth and in space made follow-up observations, which allowed identification of what scientists deem to be a source of very high energy neutrinos, and thus, of cosmic rays. Besides neutrinos, the observations made across the electromagnetic spectrum included gamma-rays, X-rays, and optical and radio radiation. The observatories are operated by international teams involving a total of more than 1,000 scientists supported by funding agencies in countries around the world.

Credit: Nicolle R. Fuller/NSF/IceCube


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