How two gamma-ray bursts created record-breaking high-energy photons
Light packing up to 1 trillion electron volts reveals details of these cosmic explosions
The explosion of a star can trigger a gamma-ray burst (illustrated). Speedy electrons trapped in magnetic fields produce energetic light from these bursts, new research shows.
Science Communication Lab/DESY
Two eruptions of gamma rays from exploding stars in far-off galaxies have pelted Earth with the highest-energy photons yet detected from one of these explosions.