A broad range of telescopes caught a tell-tale blinding flash of a short gamma-ray burst 5.5 billion light-years away, reminiscent of the kilonova explosion linked with the 2017 neutron star collision detected in a historic astronomical breakthrough.

However, according to research that has been accepted into The Astrophysical Journal and is available on arXiv, there was something about the current kilonova accompanying the gamma-ray burst, dubbed GRB 200522A, that was very unusual.



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