Year of the Comet
Comet C/2011 L4 (PANSTARRS)

PANSTARRS information

Comet C/2012 S1 (ISON)

ISON information

Stephen James O'Meara's Secret Sky

Stephen James O'Meara's secret sky: Defect or discovery?

December 2008: Nearly 200 years before their identification, William Herschel suspected uranian rings.
Contributed by Stephen James O'Meara
Published: October 27, 2008
What I'm about to tell you is not new. Namely, that the German-born British observer Sir William Herschel (1738-1822) suspected rings around Uranus 190 years before astronomers clearly identified them in 1977.
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