11. Radiolysis from gamma rays can create strongly active free radicals in solution. 12. Gamma ray bursts were discovered in 1967, but the phenomenon remains mysterious.13. Gamma rays , discovered in 1967, are observed once a day on average.14. Internal shocks within the ejecta presumably trigger the initial gamma ray burst. 15. The gamma ray burst was detected Saturday morning by two orbiting observatories. 16. One instrument recorded an 80-second gamma ray burst from the constellation Orion. 17. This fleeting nature of gamma ray bursts has frustrated scientists for three decades. 18. It seems to be gamma rays just glowing like nobody's business. 19. Resolution figures are given with reference to specified gamma ray energies. 20. A gamma ray spectrometer analyzed the chemical composition of the crust.
