NASA’s Swift and Fermi Missions Detect Exceptional Cosmic Blast An unusually bright and long-lasting pulse of high-energy radiation swept over Earth Sunday, October 9, captivating astronomers around the world. The intense emission came from a gamma-ray burst (GRB) – the most powerful class of explo
, as well as others. Around the world, telescopes were turned to the site to study the aftermath, and new observations continue.
Called GRB 221009A, the explosion provided an unexpectedly exciting start to the 10th Fermi Symposium, a gathering of gamma-ray astronomers now underway in Johannesburg, South Africa. “It’s safe to say this meeting really kicked off with a bang – everyone’s talking about this,” said Judy Racusin, a Fermi deputy project scientist atAstronomers think GRB 221009A represents the birth of a newformed within the heart of a collapsing star.
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