Cassini Imaging Science: Initial Results on Phoebe and Iapetus

The Cassini Imaging Science Subsystem acquired high-resolution imaging data on the outer Saturnian moon, Phoebe, during Cassini's close flyby on 11 June 2004 and on Iapetus during a flyby on 31 December 2004. Phoebe has a heavily cratered and ancient surface, shows evidence of ice near the surf...

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Veröffentlicht in:Science (American Association for the Advancement of Science) 2005-02, Vol.307 (5713), p.1237-1242
Hauptverfasser: Porco, C. C, Baker, E, Barbara, J, Beurle, K, Brahic, A, Burns, J. A, Charnoz, S, Cooper, N, Dawson, D. D, Del Genio, A. D, Denk, T, Dones, L, Dyudina, U, Evans, M. W, Giese, B, Grazier, K, Helfenstein, P, Ingersoll, A. P, Jacobson, R. A, Johnson, T. V, McEwen, A, Murray, C. D, Neukum, G, Owen, W. M, Perry, J, Roatsch, T, Spitale, J, Squyres, S, Thomas, P. C, Tiscareno, M, Turtle, E, Vasavada, A. R, Veverka, J, Wagner, R, West, R
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container_issue 5713
container_start_page 1237
container_title Science (American Association for the Advancement of Science)
container_volume 307
creator Porco, C. C
Baker, E
Barbara, J
Beurle, K
Brahic, A
Burns, J. A
Charnoz, S
Cooper, N
Dawson, D. D
Del Genio, A. D
Denk, T
Dones, L
Dyudina, U
Evans, M. W
Giese, B
Grazier, K
Helfenstein, P
Ingersoll, A. P
Jacobson, R. A
Johnson, T. V
McEwen, A
Murray, C. D
Neukum, G
Owen, W. M
Perry, J
Roatsch, T
Spitale, J
Squyres, S
Thomas, P. C
Tiscareno, M
Turtle, E
Vasavada, A. R
Veverka, J
Wagner, R
West, R
description The Cassini Imaging Science Subsystem acquired high-resolution imaging data on the outer Saturnian moon, Phoebe, during Cassini's close flyby on 11 June 2004 and on Iapetus during a flyby on 31 December 2004. Phoebe has a heavily cratered and ancient surface, shows evidence of ice near the surface, has distinct layering of different materials, and has a mean density that is indicative of an ice-rock mixture. Iapetus's dark leading side (Cassini Regio) is ancient, heavily cratered terrain bisected by an equatorial ridge system that reaches 20 kilometers relief. Local albedo variations within and bordering Cassini Regio suggest mass wasting of ballistically deposited material, the origin of which remains unknown.
doi_str_mv 10.1126/science.1107981
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C</creatorcontrib><creatorcontrib>Baker, E</creatorcontrib><creatorcontrib>Barbara, J</creatorcontrib><creatorcontrib>Beurle, K</creatorcontrib><creatorcontrib>Brahic, A</creatorcontrib><creatorcontrib>Burns, J. A</creatorcontrib><creatorcontrib>Charnoz, S</creatorcontrib><creatorcontrib>Cooper, N</creatorcontrib><creatorcontrib>Dawson, D. D</creatorcontrib><creatorcontrib>Del Genio, A. D</creatorcontrib><creatorcontrib>Denk, T</creatorcontrib><creatorcontrib>Dones, L</creatorcontrib><creatorcontrib>Dyudina, U</creatorcontrib><creatorcontrib>Evans, M. W</creatorcontrib><creatorcontrib>Giese, B</creatorcontrib><creatorcontrib>Grazier, K</creatorcontrib><creatorcontrib>Helfenstein, P</creatorcontrib><creatorcontrib>Ingersoll, A. P</creatorcontrib><creatorcontrib>Jacobson, R. A</creatorcontrib><creatorcontrib>Johnson, T. V</creatorcontrib><creatorcontrib>McEwen, A</creatorcontrib><creatorcontrib>Murray, C. 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Geoastrophysical Abstracts</collection><collection>Meteorological &amp; Geoastrophysical Abstracts - Academic</collection><collection>MEDLINE - Academic</collection><jtitle>Science (American Association for the Advancement of Science)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Porco, C. C</au><au>Baker, E</au><au>Barbara, J</au><au>Beurle, K</au><au>Brahic, A</au><au>Burns, J. A</au><au>Charnoz, S</au><au>Cooper, N</au><au>Dawson, D. D</au><au>Del Genio, A. D</au><au>Denk, T</au><au>Dones, L</au><au>Dyudina, U</au><au>Evans, M. W</au><au>Giese, B</au><au>Grazier, K</au><au>Helfenstein, P</au><au>Ingersoll, A. P</au><au>Jacobson, R. A</au><au>Johnson, T. V</au><au>McEwen, A</au><au>Murray, C. D</au><au>Neukum, G</au><au>Owen, W. M</au><au>Perry, J</au><au>Roatsch, T</au><au>Spitale, J</au><au>Squyres, S</au><au>Thomas, P. C</au><au>Tiscareno, M</au><au>Turtle, E</au><au>Vasavada, A. R</au><au>Veverka, J</au><au>Wagner, R</au><au>West, R</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Cassini Imaging Science: Initial Results on Phoebe and Iapetus</atitle><jtitle>Science (American Association for the Advancement of Science)</jtitle><addtitle>Science</addtitle><date>2005-02-25</date><risdate>2005</risdate><volume>307</volume><issue>5713</issue><spage>1237</spage><epage>1242</epage><pages>1237-1242</pages><issn>0036-8075</issn><eissn>1095-9203</eissn><coden>SCIEAS</coden><abstract>The Cassini Imaging Science Subsystem acquired high-resolution imaging data on the outer Saturnian moon, Phoebe, during Cassini's close flyby on 11 June 2004 and on Iapetus during a flyby on 31 December 2004. Phoebe has a heavily cratered and ancient surface, shows evidence of ice near the surface, has distinct layering of different materials, and has a mean density that is indicative of an ice-rock mixture. Iapetus's dark leading side (Cassini Regio) is ancient, heavily cratered terrain bisected by an equatorial ridge system that reaches 20 kilometers relief. Local albedo variations within and bordering Cassini Regio suggest mass wasting of ballistically deposited material, the origin of which remains unknown.</abstract><cop>United States</cop><pub>American Association for the Advancement of Science</pub><pmid>15731440</pmid><doi>10.1126/science.1107981</doi><tpages>6</tpages></addata></record>
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identifier ISSN: 0036-8075
ispartof Science (American Association for the Advancement of Science), 2005-02, Vol.307 (5713), p.1237-1242
issn 0036-8075
1095-9203
language eng
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source American Association for the Advancement of Science; Jstor Complete Legacy; MEDLINE
subjects Albedo
Analysis
Artificial satellites
Astronomical objects
Astronomy
Evidence
Extraterrestrial Environment
Fractions
Geologic Sediments
Iapetus (Satellite)
Ice
Image resolution
Imaging
Impact craters
Moons
Observations
Porosity
Research Articles and Reports
Satellites
Satellites (Astronomical bodies)
Saturn
Saturn (Planet)
Saturnian satellites
Scientific Concepts
Scientific imaging
Space exploration
Spacecraft
Spectrometer
Spectrometers
Topography
Water
title Cassini Imaging Science: Initial Results on Phoebe and Iapetus
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