Mathematics – Logic
Scientific paper
Apr 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987sciam.256...48j&link_type=abstract
Scientific American (ISSN 0036-8733), vol. 256, April 1987, p. 48-60.
Mathematics
Logic
6
Satellite Surfaces, Satellite-Borne Photography, Uranus Satellites, Voyager 2 Spacecraft, Ariel, Craters, Miranda, Oberon, Titania, Umbriel, Volcanoes, Uranus, Satellites, Diagrams, Miranda, Photographs, Oberon, Titania, Umbriel, Ariel, Surface, Features, Description, Characteristics, Age, Spacecraft Observations, Voyager 2, Icy Bodies, Geologic History, Mass, Composition, Comparisons, Imagery, Albedo, Physical Properties, Size, Topography, Terrain, Evolution, Tectonics, Bombardment, Impacts, Ice, Resurfaci
Scientific paper
The topographies of the major moons of Uranus are described, and reasons for the appearances of the surfaces are given. Oberon and Titania, the two outermost major moons, have similar bulk properties but different appearances. Oberon appears to have been a largely passive structure for incoming projectiles, while Titania's surface shows extensive resurfacing. Umbriel and Ariel also have similar bulk properties and contrasting appearances, the former being totally bland except for two unexplained bright spots and the latter having a extensive network of surface faults. Miranda, the smallest and innermost of the major moons, has three large, remarkable ovoid regions on its surface. It is suggested that these ovoids are due to an uncompleted differentiation process.
Brown Harvey R.
Johnson Torrence V.
Soderblom Larry A.
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