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Cassini Captures New Views Of Haze-Enshrouded World

Date:
April 14, 2005
Source:
NASA/Jet Propulsion Laboratory
Summary:
NASA's Cassini spacecraft successfully flew by Saturn's moon Titan at a distance of 2,402 kilometers (1,493 miles) on Thursday, March 31. Cassini's multiple instruments are providing new views of the haze-enshrouded world.

This view of Titan from the March 31 flyby uncovers new territory not previously seen at this resolution by Cassini's cameras.
Credit: Image NASA/Jet Propulsion Laboratory

NASA's Cassini spacecraft successfully flew by Saturn's moon Titan at a distance of 2,402 kilometers (1,493 miles) on Thursday, March 31. Cassini's multiple instruments are providing new views of the haze-enshrouded world.

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On this recent flyby, Titan's haze was the focus of ultraviolet observations. By mapping the haze, scientists hope to learn about particle size and properties. Titan's transient clouds were also studied during the flyby.

Titan's northern hemisphere was previously imaged with Cassini's radar instrument in October 2004 and February 2005. This time, Cassini's optical cameras got their best view of the same area, as did the visual and infrared mapping spectrometer.

Titan is a prime target of the Cassini-Huygens mission because it is the only moon in our solar system with a thick, smoggy atmosphere. Cassini was launched over seven years ago and has traveled 3.55 billion kilometers (2.2 billion miles).

All 12 of Cassini's instruments have been returning data, including tantalizing images. Recently, scientists noticed episodic interferences on the composite infrared spectrometer that were traced back to the time of orbit insertion. A mirror on the spectrometer is showing some signs of jitter. The movement may be associated with the use of the spacecraft reaction wheels, used for spacecraft pointing control. A motor on one of three sensors on the magnetospheric imaging instrument and another motor on the plasma spectrometer are also not working properly. However, a workaround has been identified for the latter. All three instruments continue to function, although with some reduced level of science data collection.

"We are working to understand why the instruments are not performing properly but it is likely to be a few weeks before we have definitive answers," said Robert T. Mitchell, Cassini program manager at NASA's Jet Propulsion Laboratory, Pasadena, Calif. "When running a mission for this long, you expect to have a few glitches. Cassini has been working remarkably well considering the duration and complexity of the mission."

Cassini's next encounter is with Titan on April 16 at an altitude of 1,025 kilometers (637 miles). This will be Cassini's closest flyby of Titan yet.

The latest images from this flyby are available at: http://saturn.jpl.nasa.gov and http://www.nasa.gov/cassini.

The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. JPL, a division of the California Institute of Technology in Pasadena, manages the Cassini mission for NASA's Science Mission Directorate, Washington, D.C.


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 Captures New Views Of Haze-Enshrouded World." ScienceDaily. ScienceDaily, 14 April 2005. <www.sciencedaily.com/releases/2005/04/050411112020.htm>.
NASA/Jet Propulsion Laboratory. (2005, April 14). Cassini Captures New Views Of Haze-Enshrouded World. ScienceDaily. Retrieved November 21, 2014 from www.sciencedaily.com/releases/2005/04/050411112020.htm
NASA/Jet Propulsion Laboratory. "Cassini Captures New Views Of Haze-Enshrouded World." ScienceDaily. www.sciencedaily.com/releases/2005/04/050411112020.htm (accessed November 21, 2014).

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