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.
>
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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."
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>>They are currently believed to occur when a star collapses into a black hole.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)
