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Cheshire Cat
13-03-2012, 14:10:48
http://en.wikipedia.org/wiki/Uranus#Discovery

231 years ago Herschel discovered Uranus

:beer:

MDA
13-03-2012, 14:35:28
but apparently Uranus had been observed on four consecutive nights over ninety years earlier :mr_b:

I guess maybe it was misidentified as a brown dwarf star?