GRB: Nasty but nice

If you notice a Gamma Ray Burst, look the other way. If you happen to have a paper bag, put it over your head.

 "The sources of most Gamma Ray Bursts are billions of light years away from Earth, implying that the explosions are extremely energetic. A typical burst releases as much energy in a few seconds as the Sun will in its entire 10-billion-year lifetime". (Wikipedia)

 Here's one I snapped earlier

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