Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981s%26t....62..430b&link_type=abstract
Sky and Telescope, vol. 62, Nov. 1981, p. 430-444.
Astronomy and Astrophysics
Astronomy
Astronomical Photography, Flyby Missions, Planetology, Saturn (Planet), Voyager Project, Color Photography, High Resolution, Polarimetry, Saturn Rings, Radiation, Plasma Wave Experiment, Electric Fields, Radio Waves, Plasmas, Magnetosphere, Toruses, Hydrogen, Solar Wind, Catalogs, Circulation, Electromagnetic Fields, Magnetic Fields, Titan, Iapetus, Enceladus, Data, Aerosols, Tethys, E Ring, Surface, Saturn, Voyager 2, Features, Storms, Rings, Satellites, Photographs, Radioemissions, Photopolarimeters, Wind
Scientific paper
Preliminary results of the Voyager 2 encounter with Saturn are discussed. Following a review of the Voyager 2 mission, noting the jamming of the scan platform carrying most of the instruments just prior to encounter, attention is given to observations of ring structures including ringlets, spokes, kinks, Cassini's division and satellite resonance effects. Changes in the atmosphere of Saturn allowing cloud structures to be observed with greater contrast and clarity than during the Voyager 1 encounter are noted, and differences between the observed meteorology on Saturn and that on Jupiter are pointed out. Observations of the Saturn magnetic field, including an internal anomaly responsible for a radio pulse and plasma and neutral hydrogen toruses within the magnetosphere are presented along with detections of electromagnetic disturbances near the ring system. Consideration is finally given to Voyager 2 images and measurements of the Saturn satellites, which revealed a dense, orange-colored atmosphere attributed to an aerosol haze around Titan, the ancient cratered surface with an enormous rift on Tethys, evidence of at least five distinct evolutionary episodes on Enceladus, and the configuration of the highly contrasting forward and rear-facing sides of Iapetus. The potential for discoveries in the Voyager 2 encounter with Uranus to take place four years hence is also indicated.
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