Actually there is a way to know about a gamma ray burst before it's approaching. Thanks to neutrinos: https://en.wikipedia.org/wiki/Supernova_Early_Warning_Syst

Actually there is a way to know about a gamma ray burst before it's approaching. Thanks to neutrinos: https://en.wikipedia.org/wiki/Supernova_Early_Warning_System https://en.wikipedia.org/wiki/Supernova_Early_Warning_System