Tree ring data indicates that sometime around 774 or 775 A.D., an intense burst of radiation hit the Earth. What was its source? Scientists were uncertain, but it was probably a supernova. Unfortunately, there were no re...

I don't know about you, but each time I read thi...  ...of news my head spins. Scientists have detected a gamma ray burst that dates back 13 billion years, 95 pe...  ...ust interested in the record books, though -- the gamma ray burst extended the frontiers of human knowled...