"Brightest Of All Time" Gamma-ray Burst: GRB 221009A | Hubble Space Telescope
On Sunday, Oct. 9, 2022, a pulse of intense radiation swept through the solar system so exceptional that astronomers quickly dubbed it the BOAT—the brightest of all time. The source was a gamma-ray burst (GRB), the most powerful class of explosions in the universe.
The Hubble Space Telescope’s Wide Field Camera 3 revealed the infrared afterglow (circled) of GRB 221009A and its host galaxy, seen nearly edge-on as a sliver of light extending to the burst's upper left. This composite incorporates images taken on Nov. 8 and Dec. 4, 2022, one and two months after the eruption. Given its brightness, the burst’s afterglow may remain detectable by telescopes for several years. The picture combines three near-infrared images taken each day at wavelengths from 1 to 1.5 microns.
Credit: NASA, European Space Agency, CSA, STScI, A. Levan (Radboud University)
Image Processing: Gladys Kober
Release Date: March 28, 2023
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