1) Astronomical event
Found on
https://www.crosswordclues.com/clue/gamma-ray-burst
Gamma-ray bursts (GRBs) are flashes of gamma rays associated with extremely energetic explosions that have been observed in distant galaxies. They are the brightest electromagnetic events known to occur in the universe. Bursts can last from ten milliseconds to several minutes. The initial burst is usually followed by a longer-lived `afterglow` e.....
Found on
http://en.wikipedia.org/wiki/Gamma-ray_burst
Short and intense burst of high energy radiation emanating from the distant universe.
Found on
http://planetfacts.org/space-terms/
An intense, short burst of gamma rays and X-rays from a cosmic source known as a gamma-ray burster. Gamma-ray bursts are the most violent and powerful event in the universe and may last from about one hundredth of a second to about ten seconds. GRBs are typically registered once or twice a day from ...
Found on
http://www.daviddarling.info/encyclopedia/G/gamma-ray_burst.html
No exact match found.
