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Updated: May 7, 2026
09:46
Production and Measurement of Organic Particulate Matter in the Harvard Environmental Chamber
Published on: November 18, 2018
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Chemical interactions between Saturn's atmosphere and its rings
J H Waite1, R S Perryman2, M E Perry3
1Space Science and Engineering Division, Southwest Research Institute, San Antonio, TX 78238, USA. hwaite@swri.edu.
Science (New York, N.Y.)
|October 6, 2018
Summary
Saturn
Area of Science:
- Planetary Science
- Atmospheric Chemistry
- Space Physics
Background:
- Early missions suggested chemical interactions between Saturn's rings and atmosphere.
- Understanding this interaction informs ring composition and atmospheric influence.
Purpose of the Study:
- Characterize Saturn's atmospheric structure.
- Quantify material influx from the rings to the atmosphere.
Main Methods:
- In situ measurements using the Cassini Ion Neutral Mass Spectrometer.
- Analysis of data from the Cassini spacecraft's Grand Finale phase.
Main Results:
- The helium/hydrogen (He/H2) ratio in Saturn's atmosphere was determined to be 10-16%.
- Volatile compounds (methane, CO, N2) and organic grains flow inward from the rings at 4800-45,000 kg/s.
Conclusions:
- Confirms significant material exchange between Saturn's rings and atmosphere.
- Provides new data on ring composition and atmospheric dynamics.
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