Astronomy and Astrophysics – Astronomy
Scientific paper
May 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979s%26t....57..423b&link_type=abstract
Sky and Telescope, vol. 57, May 1979, p. 423-427.
Astronomy and Astrophysics
Astronomy
2
Astronomical Photography, Galilean Satellites, Jupiter (Planet), Jupiter Red Spot, Satellite-Borne Photography, Voyager Project, Amalthea, Callisto, Europa, Ganymede, Io, Jupiter, Satellites, Great Red Spot, Voyager 1, Probes, Io, Clouds, Callisto, Ganymede, Europa, Photography, Imagery, Popular, Review, Turbulence
Scientific paper
Photographic results from the Voyager 1 mission to Jupiter and its satellites are presented. The first object observed by Voyager was the tiny reddish innermost satellite Amalthea. The spacecraft then moved to within 22,000 km of Io, revealing a mottled surface containing no craters, indicating an age of less than 10 million years. A volcanic caldera has been identified, and plumes rising from erupting volcanoes were observed on the satellite. Photographs taken as the spacecraft crossed the orbital plane of Jupiter revealed a thin ring of particles around the planet. Photographs of Jupiter from a distance as close as 280,000 km show diverse and extremely turbulent circulation patterns, with the Red Spot remaining relatively calm. Auroral activity and lightning flashes were also detected. Ganymede was found to be covered with light-colored streaks, rayed craters and fault lines, implying tectonic activity, while Callisto is covered with small (less than 100 km in diameter) craters.
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