the Compton Gamma Ray Observatory based at the National Aeronautics and Space Administration ( nasa ), usa, has detected that gamma-ray bursts occur almost every day. The flashes appear from random directions and last for a few seconds. There are two theories on gamma-ray bursts. One theory suggests that the bursts originate from some unknown sources within the milky way galaxy, whereas others proposes that the bursts originate in distant galaxies. If the latter theory is considered then the bursts are amongst the most violent events and the most brilliant bursts in the Universe.

In January, an astronomy satellite called