Astronomers are trying to determine what caused a series of gamma-ray bursts, the most powerful explosions in the universe, to occur in a single day.
Astronomers are trying to understand what caused a series of gamma ray bursts, or GRBs — the most powerful explosions in the universe.
These energetic bursts are typically unleashed by the incendiary death of a star, or when it is shredded by a black... [7831 chars]