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120:. On 19 February 2009, NASA announced that the GROND team's work shows that the GRB was the most energetic yet observed, and 12.2 Gly distant.
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Greiner, Jochen; et al. (2009-02-04). "The redshift and afterglow of the extremely energetic gamma-ray burst GRB 080916C".
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385:"NASA's Fermi Telescope Sees Most Extreme Gamma-ray Blast Yet"
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58:afterglows and for doing follow-up observations on
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