first edition Hardcover
1781 · London
by Herschel, William
London: J. Nichols, 1781. First Edition. Hardcover. Very good. 1st edition, 1st printing anywhere of Herschel’s paper (read April 26, 1781) announcing his sighting of Uranus, the first new planet to be discovered since antiquity (Mercury in 265BC). Herschel thought that what he had seen was doubtless a planet, but since he was an amateur, and not a member of The Royal Society, he modestly titled his article with reserve, and in his paper, he referred to the object as a comet. However, he included extensive specifics on its location in the solar system and assumed that other, more experienced, astronomers could find it and determine what it was with certainty. (truncated)