The unprecedented signal likely comes from a set of merging galaxies eight billion light-years away.
In June 2022, a radio telescope in Western Australia detected a fleeting radio signal from a galaxy over 10 billion light-years from Earth. Now, a team of astronomers that studied the blast have confirmed it’s the most distant of its kind yet seen. The radio signal was a fast radio burst, or FRB, a type of short electromagnetic outburst far more energetic than our Sun.
Distant fast radio bursts like FRB 20220610A are useful to astronomers because they reveal gas that sits between galaxies. This ionized gas contributes to the overall mass of the universe, but some of that mass is difficult to detect because it is very spread out in the spaces between galaxies, according to study co-author Ryan Shannon, an astronomer at the Swinburne University of Technology in Australia, in the same release.
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