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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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Ganymede
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Original Caption Released with Image:
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Voyager 1 took this picture of Jupiter's satellite Ganymede from a distance of 5 million miles (8.025 million kilometers) early on the morning of Feb. 26. Ganymede is the largest of Jupiter's 13 satellites. It is slightly larger than the planet Mercury, and has a density about twice that of water. That leads scientists to believe it is composed of a mixture of rock and ice. Ganymede is about four times brighter than Earth's Moon, and ground-based observations indicate a surface of water frost or ice. Details of the surface are not easily interpreted. The bright spot near the center of the picture is five times brighter than the Moon, and may contain more than surrounding areas. The bright pattern around the spot reminds scientists of ray craters on the Moon and Mercury, and the area may in fact be an impact crater that has exposed fresh, underlying ice. Further interpretation will require higher-resolution pictures. This color photo was taken through blue, green and orange filters and was assembled in the Image Processing Lab at Jet Propulsion Laboratory. JPL manages and controls the Voyager project for NASA's Office of Space Science.
Original_Caption_Rel eased_with_Image
Voyager 1 took this picture of Jupiter's satellite Ganymede from a distance of 5 million miles (8.025 million kilometers) early on the morning of Feb. 26. Ganymede is the largest of Jupiter's 13 satellites. It is slightly larger than the planet Mercury, and has a density about twice that of water. That leads scientists to believe it is composed of a mixture of rock and ice. Ganymede is about four times brighter than Earth's Moon, and ground-based observations indicate a surface of water frost or ice. Details of the surface are not easily interpreted. The bright spot near the center of the picture is five times brighter than the Moon, and may contain more than surrounding areas. The bright pattern around the spot reminds scientists of ray craters on the Moon and Mercury, and the area may in fact be an impact crater that has exposed fresh, underlying ice. Further interpretation will require higher-resolution pictures. This color photo was taken through blue, green and orange filters and was assembled in the Image Processing Lab at Jet Propulsion Laboratory. JPL manages and controls the Voyager project for NASA's Office of Space Science.
Original Caption Released with Image
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Addition Date:
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1999-07-23
Addition_Date
1999-07-23
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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Ganymede
Target_Name
Ganymede
Target Name
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Is a satellite of:
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Jupiter
Is_a_satellite_of
Jupiter
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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100 samples x 100 lines
Product_Size
100 samples x 100 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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P21150
Producer_ID
P21150
Producer ID
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facet_what:
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Mercury
facet_what
Mercury
facet_what
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facet_what:
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Crater
facet_what
Crater
facet_what
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facet_what:
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Moon
facet_what
Moon
facet_what
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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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Earth
facet_what
Earth
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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Ganymede (Jupiter Moon)
facet_what
Ganymede (Jupiter Moon)
facet_what
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facet_where:
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Mercury
facet_where
Mercury
facet_where
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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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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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PIA01987
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UID:
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SPD-PHOTJ-PIA01987
UID
SPD-PHOTJ-PIA01987
UID
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orignial url:
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orignial_url
orignial url
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