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New window on the high-energy universe

New telescope finds strange behavior in gamma-ray bursts, and also documents the most energetic burst known.

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5:50pm, February 20, 2009

Editor’s note: This story originally appeared on SN Online in December and was updated February 19 after Michael Briggs of NASA’s Goddard Space Flight Center in Greenbelt., Md., reported that the gamma-ray burst known as GRB 080916C is the most energetic burst known.

VANCOUVER, Canada — Curtain up! Light the lights! In its first four months of monitoring the heavens from orbit, NASA’s Fermi Gamma-ray Space Telescope has unveiled the activity of celestial objects that emit powerful gamma rays — photons that pack 20 m

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