Imaging of Titan from the Cassini spacecraft

Carolyn C. Porco, Emily Baker, John Barbara, Kevin Beurle, Andre Brahic, Joseph A. Burns, Sebastien Charnoz, Nick Cooper, Douglas D. Dawson, Anthony D. Del Genio, Tilmann Denk, Luke Dones, Ulyana Dyudina, Michael W. Evans, Stephanie Fussner, Bernd Giese, Kevin Grazier, Paul Helfenstein, Andrew P. Ingersoll, Robert A. JacobsonTorrence V. Johnson, Alfred McEwen, Carl D. Murray, Gerhard Neukum, William M. Owen, Jason Perry, Thomas Roatsch, Joseph Spitale, Steven Squyres, Peter Thomas, Matthew Tiscareno, Elizabeth P. Turtle, Ashwin R. Vasavada, Joseph Veverka, Roland Wagner, Robert West

Research output: Contribution to journalArticlepeer-review

283 Scopus citations

Abstract

Titan, the largest moon of Saturn, is the only satellite in the Solar System with a substantial atmosphere. The atmosphere is poorly understood and obscures the surface, leading to intense speculation about Titan's nature. Here we present observations of Titan from the imaging science experiment onboard the Cassini spacecraft that address some of these issues. The images reveal intricate surface albedo features that suggest aeolian, tectonic and fluvial processes; they also show a few circular features that could be impact structures. These observations imply that substantial surface modification has occurred over Titan's history. We have not directly detected liquids on the surface to date. Convective clouds are found to be common near the south pole, and the motion of mid-latitude clouds consistently indicates eastward winds, from which we infer that the troposphere is rotating faster than the surface. A detached haze at an altitude of 500 km is 150-200 km higher than that observed by Voyager, and more tenuous haze layers are also resolved.

Original languageEnglish (US)
Pages (from-to)159-168
Number of pages10
JournalNature
Volume434
Issue number7030
DOIs
StatePublished - Mar 10 2005

ASJC Scopus subject areas

  • General

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