Word: supernovae
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...stuff the earth is made of was created in a supernova billions of years ago," explains Stephen S. Murray. "In fact most of our elements come from supernovae," he adds...
Seward, who does his research at the Harvard Smithsonian Center for Astrophysics, located near the QRAC, recently startled the astronomical field by locating and photographing the third known optical supernova remnants, also known as pulsars...
...violent explosion--a supernova-- often characterizes a star's death, producing, at its brightest, radiation 10 billion times that of the sun and leaves behind a collapsed core of neutrons known as a pulsar...
...death of a far-off star may seem of little consequence to life on Earth, but Seward points out that a supernova may have played a crucial role in the planet's evolutionary evolutionary history...
...Bureau works is quite simple: when someone sights an unusual occurance-most commonly an asteriod, nova, supernova or comet-he contacts Marsden, who then performs some preliminary calculations to verify the accuracy of the report. He then sends out a telegram from the telex machine located in his office to the service's 800 subscribers...