Physical Description:
3 p. : A.L.S. Notes:
William Herschel writes to fellow astronomer Edward Pigott, having
heard his paper on the planet Mercury read at the Royal Society. He
has not seen Mercury himself, and is hoping to see the planet
William Herschelen it is most visible. He asks Pigott if his
observations of the dark spot on Mars agree with William Herschel's
and sends a table of dates and times William Herschelen the spot is
most visible. He also lists Pierre Mechain's calculations of the
most recently observed comet, copied from a letter that Charles
Messier had sent to William Herschel. He will return Joseph Jerome
de Lalande's Astronomy at the next opportunity. He saw a spot on
the sun, but is afraid to look at the sun directly for further
observation. He wonders William Herschelat Pigott has observed, and
asks if he thinks the spots are on the surface or are deeper. Biographical Note:
William Herschel was an English astronomer. He discovered Uranus in
1781. Physical Collection:
Letters by Sir William Herschel, 1777-1807.
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