https://www.vice.com/en_us/article/qvgqgw/a-mysterious-burst-of-energy-in-space-has-smashed-records

For the first time, astrophysicists have observed a cosmic explosion emit particles that are a trillion times more energetic than visible light, a record-setting measurement from a phenomenon that scientists are still seeking to fully understand.

The observation of this powerful gamma-ray burst (GRB), as these explosions are known, adds another layer to what scientists think happens when a star implodes. The findings were published on November 20 in two papers in the journal Nature.