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Collection:
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NASA Planetary Photo Journal Collection
Collection
NASA Planetary Photo Journal Collection
Collection
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Title:
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Saturn's satellite Rhea
Title
Saturn's satellite Rhea
Title
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Original Caption Released with Image:
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Bright streaks and blotches are visible against a darker back-ground on the surface of Saturn's satellite Rhea, seen in this Voyager 1 image taken Nov. 11, 1980 from a range of 1,925,000 kilometers (1,196,000 miles). Even the dark areas, thought to be water frost and ice, are fairly bright with about 50 percent reflectance. The bright streaks may be related to impacts by objects that throw out pulverized ice grains from beneath the ice-covered surface. Some of the bright streaks are not straight but have a curved appearance similar to the grooved, icy terrain on Jupiter's satellite Ganymede seen in Voyager photographs taken at this resolution. Scientists do knot yet know if a satellite of Rhea's size (approximately 1,500 kilometers or 900 miles in diameter) can have an active thermal history like Ganymede's, but higher resolution photographs taken by Voyager should reveal clues to its history. The Voyager Project is managed by the Jet Propulsion Laboratory for NASA.
Original_Caption_Rel eased_with_Image
Bright streaks and blotches are visible against a darker back-ground on the surface of Saturn's satellite Rhea, seen in this Voyager 1 image taken Nov. 11, 1980 from a range of 1,925,000 kilometers (1,196,000 miles). Even the dark areas, thought to be water frost and ice, are fairly bright with about 50 percent reflectance. The bright streaks may be related to impacts by objects that throw out pulverized ice grains from beneath the ice-covered surface. Some of the bright streaks are not straight but have a curved appearance similar to the grooved, icy terrain on Jupiter's satellite Ganymede seen in Voyager photographs taken at this resolution. Scientists do knot yet know if a satellite of Rhea's size (approximately 1,500 kilometers or 900 miles in diameter) can have an active thermal history like Ganymede's, but higher resolution photographs taken by Voyager should reveal clues to its history. The Voyager Project is managed by the Jet Propulsion Laboratory for NASA.
Original Caption Released with Image
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Addition Date:
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1998-11-13
Addition_Date
1998-11-13
Addition Date
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Produced By:
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JPL
Produced_By
JPL
Produced By
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Mission:
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Voyager
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Spacecraft:
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Voyager 1
Spacecraft
Voyager 1
Spacecraft
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Target Name:
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Rhea
Target_Name
Rhea
Target Name
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Is a satellite of:
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Saturn
Is_a_satellite_of
Saturn
Is a satellite of
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Instrument:
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Imaging Science Subsystem - Narrow Angle
Instrument
Imaging Science Subsystem - Narrow Angle
Instrument
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Product Size:
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200 samples x 200 lines
Product_Size
200 samples x 200 lines
Product Size
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Primary Data Set:
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Voyager EDRs
Primary_Data_Set
Voyager EDRs
Primary Data Set
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Producer ID:
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P23085
Producer_ID
P23085
Producer ID
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facet_what:
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Jupiter
facet_what
Jupiter
facet_what
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facet_what:
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Voyager
facet_what
Voyager
facet_what
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facet_what:
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Voyager 1
facet_what
Voyager 1
facet_what
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facet_what:
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Rhea
facet_what
Rhea
facet_what
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facet_what:
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Saturn
facet_what
Saturn
facet_what
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facet_what:
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Ganymede
facet_what
Ganymede
facet_what
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facet_what:
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Imaging Science Subsystem (ISS)
facet_what
Imaging Science Subsystem (ISS)
facet_what
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facet_what:
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Rhea (Saturn Moon)
facet_what
Rhea (Saturn Moon)
facet_what
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facet_where:
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Jet Propulsion Laboratory
facet_where
Jet Propulsion Laboratory
facet_where
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facet_where:
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Jupiter
facet_where
Jupiter
facet_where
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facet_where:
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Rhea
facet_where
Rhea
facet_where
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facet_where:
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Saturn
facet_where
Saturn
facet_where
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facet_where:
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Ganymede
facet_where
Ganymede
facet_where
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facet_where:
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Jet Propulsion Laboratory (JPL)
facet_where
Jet Propulsion Laboratory (JPL)
facet_where
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Image #:
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PIA01372
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UID:
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SPD-PHOTJ-PIA01372
UID
SPD-PHOTJ-PIA01372
UID
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orignial url:
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orignial_url
orignial url
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