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Cassini heading to Saturn's Titan after tagging Enceladus

Date:
May 22, 2010
Source:
NASA/Jet Propulsion Laboratory
Summary:
NASA's Cassini spacecraft is on its way to a flyby of Saturn's largest moon, Titan, after capturing some stunning images of Enceladus. One view shows the hazy outline of Titan behind Saturn's rings, with the dark curve of Enceladus at the bottom.

This raw, unprocessed image of Enceladus was taken on May 18, 2010, by the Cassini spacecraft, which was approximately 75,000 kilometers (46,500 miles) away at the time.
Credit: NASA/JPL/SSI

NASA's Cassini spacecraft is on its way to a flyby of Saturn's largest moon, Titan, after capturing some stunning images of Enceladus. One view shows the hazy outline of Titan behind Saturn's rings, with the dark curve of Enceladus at the bottom.

In other images, Enceladus put its craggy face forward, exhibiting some of the fractures and cratering that have made the Saturnian moon a favorite of both planetary scientists and outer-planet mission groupies. A view of Enceladus' terminator was taken by NASA's Cassini spacecraft on May 18 from approximately 75,000 kilometers (46,500 miles) away.

Cassini sent back numerous images May 18, 2010, as it finished the first leg of its planned double flyby. Cassini passed within about 435 kilometers (270 miles) of the Enceladus surface.

Cassini is heading toward Titan for a flyby that occurs in the late evening May 19 Pacific time, which is in the early hours of May 20 UTC. Because of a fortuitous cosmic alignment, Cassini can catch glimpses of these two contrasting worlds within less than 48 hours, with no maneuver in between.

The main scientific goal at Enceladus was to watch the sun play peek-a-boo behind the water-rich plume emanating from the moon's south polar region. Scientists using the ultraviolet imaging spectrograph will be able to use the flickering light to measure whether there is molecular nitrogen in the plume. Ammonia has already been detected in the plume, and scientists know heat can decompose ammonia into nitrogen molecules. Determining the amount of molecular nitrogen in the plume will give scientists clues about thermal processing in the moon's interior.

The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Cassini-Huygens mission for NASA's Science Mission Directorate in Washington. The Cassini orbiter was designed, developed and assembled at JPL.

More raw images from the Enceladus flyby, dubbed "E10," are available at: http://saturn.jpl.nasa.gov/photos/raw/

More information on the Titan flyby, dubbed "T68," is online at: http://saturn.jpl.nasa.gov/mission/flybys/titan20100520/


Story Source:

The above story is based on materials provided by NASA/Jet Propulsion Laboratory. Note: Materials may be edited for content and length.


Cite This Page:

NASA/Jet Propulsion Laboratory. "Cassini heading to Saturn's Titan after tagging Enceladus." ScienceDaily. ScienceDaily, 22 May 2010. <www.sciencedaily.com/releases/2010/05/100521210426.htm>.
NASA/Jet Propulsion Laboratory. (2010, May 22). Cassini heading to Saturn's Titan after tagging Enceladus. ScienceDaily. Retrieved October 20, 2014 from www.sciencedaily.com/releases/2010/05/100521210426.htm
NASA/Jet Propulsion Laboratory. "Cassini heading to Saturn's Titan after tagging Enceladus." ScienceDaily. www.sciencedaily.com/releases/2010/05/100521210426.htm (accessed October 20, 2014).

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