Word: nebula
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...which sends out rich chords of radio waves, is not a chief attraction. The astronomers' keenest interest is focused on much more distant space, from which the waves bring news of strange occurrences. The third strongest single source in the sky is a famous astronomical object, the Crab Nebula, the turbulent, gaseous wreck of a star that turned into a supernova and blew itself to shreds on July 11, 1054 A.D.-an event that was duly recorded by Chinese astronomers. After 908 years, the Crab's gases are still churning violently, and as the electrons that they contain...
...College Observatory, found Russian astronomers equal to their U.S. colleagues in imagination and ability. Pulkovo Observatory at Leningrad, which has a scientific staff of 400, is particularly fine. The Russians have some excellent men in astrophysics-such as L. S. Shklovsky, who proved that the glow of the Crab Nebula is caused by high-speed electrons passing through the nebula's magnetic field-but top performers are not numerous...
Second prize was given to Robert A. Hatfield '59 for his essay, "A History of the Crab Nebula...
...fine opportunity came when the moon was scheduled to eclipse the Crab nebula, which is the 4th strongest concentrated source of radio waves in the sky. Watching with a radio telescope, the astronomers noted when the waves from the nebula were cut off by the moon. They reappeared on the other side in about one hour. Calculations showed that the nebula's radio waves had been bent very slightly: about...
...first example of the character of the unity of science, Oppenheimer told of some observations by Chinese astronomers 900 years ago that the "life-time" of a particular nebula they discovered was about 52 days. This also turned out to be the "lifetime" of one of the products of a nuclear explosion, Californium...