Taxonomy term

saturn

Benchmarks: April 9, 1895: James Edward Keeler confirms Saturn's rings not solid

On April 9 and 10, 1895, astronomer James Edward Keeler snapped the most important photographs of his life. With a 13-inch (33-centimeter) refracting telescope, Keeler captured proof that Saturn’s rings were not solid disks, but instead a collection of particles revolving around the planet. The discovery put to rest a question that astronomers had been pondering for more than two centuries.
 
01 Apr 2011

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