Hi,
Gamma radiation is extremely pervasive, a 2 minute burst from a galaxy 50 galaxy width's away would still be lethal.

For example, the bursts we are detecting are from deep space ( > 2500 light years away), and these still send the instruments off the dial.

Global warming etc fades into insignificance when you look at what is going on in the rest of the universe.


>Yes, they are extremely powerful. The article isn't quite clear, how near they have to be, in order to be dangerous.
>
>>Let's hope they continue to occur in deep space and not in a nearby galaxy, otherwise it will be curtains for all of us.
>>
>>>http://news.bbc.co.uk/2/hi/science/nature/4022683.stm
>>>
>>>An observatory is launched to detect gamma ray bursts. "[The gamma ray bursts] pack more energy into their fleeting appearance [for a few seconds] than our Sun will release in its entire lifetime."
>>>
>>>They are currently believed to occur when a star collapses into a black hole.