DAVID A. HARDY, FUTURES: 50 YEARS IN SPACE / SCIENCE PHOTO LIBRARY DAVID A. HARDY, FUTURES: 50 YEARS IN SPACE / SCIENCE PHOTO LIBRARY
Dirigible exploring Titan. Artwork of a dirigible (airship) probe (lower left) exploring Titan, the largest moon of Saturn (seen through the clouds at upper right). Titan has a thick atmosphere of nitrogen and methane. It is thought to have seas of ethane and methane also. Titan will be studied by the Huygens probe in January 2005.
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