Fast Radio Bursts (FRBs) are cosmic mysteries that are slowly but surely revealing their secrets. These bright flashes of light are visible in the radio wave part of the spectrum and usually last only a few milliseconds before fading away forever. They come from random locations across the Universe and are so powerful that we can see them emanating from billions of light-years away.
Astronomers have used a newly upgraded radio telescope array to find five new FRBs and discovered that multiple bursts pierced right through the Triangulum Galaxy (M33). These brief flashes lit up the gas inside M33, allowing astronomers to calculate the maximum number of otherwise invisible atoms.
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