Word: ngc
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...could be used simultaneously. That technique gave him the resolving power of a huge single antenna with a diameter equal to the distance between the two antennas (up to 3,500 ft.). Then, aiming his twin instruments at two particularly powerful sources of radio energy, the galaxies M82 and NGC 253, * he quickly found what he was looking for: the characteristic signature of hydroxyl radicals, simple molecules composed of a single hydrogen and a single oxygen atom...
...powder magazine, the result would be something like what happens when a star explodes as a supernova. Supernovae are the mightiest celestial cataclysms known to man. Last week astronomers at Mt. Wilson Observatory in California reported discovery and observation of a super-nova in the distant island universe NGC 4273. Although about a dozen supernovae have been found by chance on photographic plates, the one announced last week was the first since 1901 to be watched during its performance and the second since the invention of the telescope...
Astronomers do not know why stars blow up. For some reason the interior seems to start releasing energy faster than the surface can radiate it. Something of the sort happened to a star in NGC 4273 long before the first men appeared on Earth. Light from the blow-up started toward Earth at 186,000 miles per second, sped on for 7,000,000 years. Thirty thousand years ago it reached the fringe of the Milky Way. Four years ago it was inside Proxima Centauri, Earth's nearest star. Going fast enough to circle Earth seven times...