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Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dps....42.0803s&link_type=abstract
American Astronomical Society, DPS meeting #42, #8.03; Bulletin of the American Astronomical Society, Vol. 42, p.954
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1
Scientific paper
The Cassini-Huygens exploration of the Saturn system has returned a wealth of scientific data on Titan, Enceladus, and the other icy satellites, Saturn, the rings, and the magnetosphere. Cassini-Huygens arrived at Saturn in July 2004, roughly two years after the northern winter solstice, and it has been in orbit around Saturn through spring equinox (August 2009), to date completing its Prime and Equinox Missions.
During the Equinox Mission, the Cassini orbiter watched as Titan's northern hemisphere lakes were illuminated by sunshine, producing a specular reflection in the near infrared. Ethane was detected in Ontario Lacus, a south polar lake, and its shoreline receded, evidence for evaporation. The most detailed temperature map ever made of Mimas showed completely unexpected hot and cold sides. High-resolution images revealed numerous new small jets in Enceladus’ tiger-stripe region. Curtain-like aurorae were caught flickering over Saturn's north pole. The rings were seen at low solar incidence angle (equinox) and their three-dimensional structure was revealed, including a spiral wave throughout the C and D rings, large clumps at the outer edge of the B ring and km-sized waves created by the moon Daphnis along the edges of the Keeler gap.
Cassini-Huygens is now entering a seven-year phase called the Solstice Mission, returning science in a hitherto unobserved seasonal phase from equinox to solstice. The Solstice Mission will provide new science; first, by observing seasonally and temporally dependent processes on Saturn, Titan, Enceladus and other icy satellites, and within the rings and magnetosphere; second, by addressing new questions that have arisen during the mission thus far, for example providing qualitatively new measurements of Enceladus and Titan which could not be accommodated in the earlier mission phases; and third, by conducting a close-in mission at Saturn that would provide a unique comparison to the Juno observations at Jupiter.
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