CLYDE WILLIAM TOMBAUGH - TYPED MANUSCRIPT SIGNED - HFSID 201342
Sale Price $315.00
Clyde Tombaugh signs a photocopy of a typed manuscript titled "Out of the Darkness - The Ninth Planet (Pluto) Discovered".
Typed Manuscript signed: "Clyde W. Tombaugh", 1p, 8½x11. Photocopy of a typed manuscript, signed in ink, titled "Out of the Darkness - The Ninth Planet (Pluto) Discovered", by Clyde Tombaugh. Clyde W. Tombaugh (1906-1997) was hired in 1929 as an assistant by the Lowell Observatory in New Mexico to continue the search for a planet beyond Neptune, which had been initiated by Percival Lowell. Tombaugh used a blink microscope to compare photographs of a small part of the night sky and detect the planet. After ten months of painstaking comparisons, on February 18, 1930 he found Pluto in the constellation Gemini. Some of his ashes are carried on the New Horizons spacecraft, which is traveling toward Pluto. Normal, minor flaws of an early photocopy. Lightly worn at edges and corners. Otherwise, fine condition.
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