Word: supernova
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...also among the most puzzling. Two huge hoops -- each a few light-years in diameter -- and a brighter, smaller ring are surrounding the site of a supernova, an exploding star whose violent death was recorded by astronomers in 1987. For millenniums before the blast, Burrows and his colleagues believe, the terminally ill star had been gushing out great volumes of gas, which formed an hourglass-shape "bubble." (The bubble would ordinarily have been spherical, except that the gas around its equator was especially thick and slow-moving and thus stayed relatively close to the supernova.) Then, when the star blew...
...said there was a supernova happening in[galaxy] M-51," says Kirshner, "and I was runningto the travel agent trying to get a flight home...
There was no supernova at all, just a bunch ofchuckling scientists...
This year, on April 1, Kirshner received astrangely familiar telegram. This one, like thelast, informed him to a supernova occurring in theM-51 galaxy. But Kirshner didn...
...this supernova turned out to be real, muchto this chagrin...