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Some new methods for planetary exploration

Pickering, W. H. (1965) Some new methods for planetary exploration. Proceedings of the National Academy of Sciences of the United States of America, 54 (6). pp. 1471-1479. ISSN 0027-8424. doi:10.1073/pnas.54.6.1471.

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For many centuries the planets of our solar system have been objects of study by astronomers. Before the invention of the telescope, these studies were restricted to an attempt to understand and predict their motion. Telescopes and accurate clocks allowed more precise observations to be made. By the 19th century, minor perturbations of the motions of the planets were being analyzed. By the end of this century, however, astronomers were becoming more interested in stellar and galactic problems, and the group interested in celestial mechanics and planetary observations appeared to be decreasing to a vanishing point in the mid-20th century. Then came the space program, and the possibility of performing experiments on, or at least near, other planets encouraged interest in the solar system to a remarkable degree.

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Additional Information:© 1965 by the National Academy of Sciences. Presented before the Academy, October 12, 1965, by invitation of the Committee on Arrangements for the Autumn Meeting. This paper presents the results of one phase of research carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract NAS 7-100, sponsored by the National Aeronautics and Space Administration.
Issue or Number:6
Record Number:CaltechAUTHORS:PICpnas65
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:7739
Deposited By: Tony Diaz
Deposited On:30 Jul 2007
Last Modified:08 Nov 2021 20:45

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