| 11. | This fleeting nature of gamma ray bursts has frustrated scientists for three decades.
|
| 12. | The gamma ray bursts are tracers of what the early universe looked like.
|
| 13. | Gamma ray bursts were discovered in 1967, but the phenomenon remains mysterious.
|
| 14. | We think there is very good circumstantial evidence for a gamma ray burst.
|
| 15. | One instrument recorded an 80-second gamma ray burst from the constellation Orion.
|
| 16. | The gamma ray burst could have done it.
|
| 17. | Another threat might come from gamma ray bursts.
|
| 18. | The gamma ray burst phenomenon was discovered in 1967, but the bursts remain mysterious.
|
| 19. | Djorgovski said there have been more than 150 theories proposed to explain gamma ray bursts.
|
| 20. | These include very high energy cosmic rays and photons and neutrinos from gamma ray bursts.
|
