GRB 080319B

astronomy

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July 17, 2026

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GRB 080319B was a gamma-ray burst (GRB) detected on March 19, 2008. GRBs are intense, unpredictable flashes of high-energy gamma rays that originate from distant objects in the universe. This particular event was exceptionally powerful, visible to the naked eye despite being 7.5 billion light-years away.12

GRBs are thought to originate from collapsing hypergiant stars or merging neutron stars. Satellites like the High Energy Transient Explorer-2 (HETE-2) and Swift are designed to detect these bursts and pinpoint their locations for further study by astronomers on Earth. Swift, for instance, can observe a GRB with its gamma-ray telescope and then quickly orient other telescopes to capture X-ray and optical afterglows.132

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Swift
One event, GRB 080319B, detected on March 19, 2008, was so powerful that it could have been observed with the naked eye, even though it was 7.5 billion light-years away. Swift also recorded for the first time the precise location of a relatively short-lived gamma-ray burst, GRB…
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One event, GRB 080319B, detected on March 19, 2008, was so powerful that it could have been observed with the naked eye, even though it was 7.5 billion light-years away. Swift also recorded for the first time the precise location of a relatively short-lived gamma-ray burst, GRB…
Read More