JAMES A. VAN ALLEN - AUTOGRAPH LETTER SIGNED 11/11/1996 - HFSID 285361
JAMES A. VAN ALLEN ALS stating that he is never worked with Clyde Tombaugh but knows him well Autograph Letter signed: "J. A. Van Allen", 1 page, 5½x5. Iowa City, Iowa, 1996 November 11. On letterhead of the Department of Physics and Astronomy, University of Iowa, to "Dear Mr. Peters".
Sale Price $531.25
JAMES A. VAN ALLEN
ALS stating that he is never worked with Clyde Tombaugh but knows him well
Autograph Letter signed: "J. A. Van Allen", 1 page, 5½x5. Iowa City, Iowa, 1996 November 11. On letterhead of the Department of Physics and Astronomy, University of Iowa, to "Dear Mr. Peters". In full: "I have never worked with Clyde Tombaugh or J. H. Christy. However, I am well acquainted with Tombaugh and continue to see him occasionally." James Van Allen (1914-2006) is best known for his work in magnetospheric physics. He developed proposals for the launch of a scientific satellite as part of the research program conducted during the International Geophysical Year of 1957-1958. The idea for the IGY, in fact, emerged from a discussion in his living room in 1950. His Explorer spacecraft, launched in 1958, returned important scientific data about the radiation belts circling the Earth, named the Van Allen Belts in his honor. Van Allen chaired the group of space scientists who recommended in 1958 that the US commit itself to a manned landing on the moon within ten years. Later, however, he came to feel that unmanned spacecraft could acquire more scientific information at a lower cost. Clyde Tombaugh (1906-1997) was the astronomer who discovered Pluto. The other scientist mention in the letter is probably John H. Christy, a natural history scholar. Edges lightly toned. Fine condition.
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