cosmic gamma-ray bursts

Cosmic gamma-ray bursts (GRBs) are extremely energetic explosions observed in distant galaxies. They release immense amounts of gamma-ray radiation, which is the most powerful form of light. These bursts can occur when massive stars collapse into black holes or when neutron stars collide. GRBs are short-lived, lasting from milliseconds to several minutes, yet they can outshine entire galaxies for a brief time. Studying GRBs helps scientists understand the universe's extreme phenomena, as well as the formation of black holes and the nature of stellar evolution. Despite their intensity, they are usually far enough away that they do not pose a threat to Earth.