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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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Hot Spots on Io
Title
Hot Spots on Io
Title
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Original Caption Released with Image:
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Volcanic hot spots, including a bright one never seen before, pepper an infrared color-coded image (left) of Jupiter's moon Io, taken by NASA's Galileo spacecraft on Aug. 6, 2001. The bright, new hot spot (arrow) in Io's high northern latitudes is the source of a towering volcanic plume detected in new images taken by Galileo's camera. Snowflake-like particles of clumped sulfur-dioxide molecules from the plume were caught by the plasma-science instrument onboard the spacecraft. Beginning about two hours after the spacecraft passed within 194 kilometers (120 miles) of Io's surface, Galileo's near-infrared mapping spectrometer recorded this image of most of the sunlit disc of the large, sizzling moon. The image shows the brightness of features at a wavelength of 4.4 microns, which detects heat from Io's many volcanic eruptions. An earlier image from Galileo's camera showing the same face of Io (right) is included for correlating the heat-sensing infrared data with geological features apparent in visible wavelengths. Many volcanic hot spots appear in the infrared image as bright regions: yellow to red to white, in order of increasing intensity. The brightest hot spot in the northern hemisphere, indicated by the arrow, was so vigorous at the time of the observation that some pixels (shown in black) were saturated. This hot spot was not a previously known volcano. Io has 108 known hot spots, 10 of which were discovered from this observation. Most of the newly discovered ones are too faint to show up in this map, but their thermal signatures can be detected by examining each location's infrared data at more than one wavelength. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Galileo mission for NASA's Office of Space Science, Washington, D.C. Additional information about Galileo and its discoveries is available on the Galileo mission home page at http://galileo.jpl.nasa.gov.
Original_Caption_Rel eased_with_Image
Volcanic hot spots, including a bright one never seen before, pepper an infrared color-coded image (left) of Jupiter's moon Io, taken by NASA's Galileo spacecraft on Aug. 6, 2001. The bright, new hot spot (arrow) in Io's high northern latitudes is the source of a towering volcanic plume detected in new images taken by Galileo's camera. Snowflake-like particles of clumped sulfur-dioxide molecules from the plume were caught by the plasma-science instrument onboard the spacecraft. Beginning about two hours after the spacecraft passed within 194 kilometers (120 miles) of Io's surface, Galileo's near-infrared mapping spectrometer recorded this image of most of the sunlit disc of the large, sizzling moon. The image shows the brightness of features at a wavelength of 4.4 microns, which detects heat from Io's many volcanic eruptions. An earlier image from Galileo's camera showing the same face of Io (right) is included for correlating the heat-sensing infrared data with geological features apparent in visible wavelengths. Many volcanic hot spots appear in the infrared image as bright regions: yellow to red to white, in order of increasing intensity. The brightest hot spot in the northern hemisphere, indicated by the arrow, was so vigorous at the time of the observation that some pixels (shown in black) were saturated. This hot spot was not a previously known volcano. Io has 108 known hot spots, 10 of which were discovered from this observation. Most of the newly discovered ones are too faint to show up in this map, but their thermal signatures can be detected by examining each location's infrared data at more than one wavelength. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Galileo mission for NASA's Office of Space Science, Washington, D.C. Additional information about Galileo and its discoveries is available on the Galileo mission home page at http://galileo.jpl.nasa.gov. Original Caption Released with Image
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Addition Date:
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2001-10-04
Addition_Date
2001-10-04
Addition Date
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Image Credit:
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NASA/JPL/University of Arizona
Image_Credit
NASA/JPL/University of Arizona
Image Credit
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Produced By:
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University of Arizona
Produced_By
University of Arizona
Produced By
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Mission:
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Galileo
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Spacecraft:
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Galileo Orbiter
Spacecraft
Galileo Orbiter
Spacecraft
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Target Name:
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Io
Target_Name
Io
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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Near Infrared Mapping Spectrometer
Instrument
Near Infrared Mapping Spectrometer
Instrument
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Product Size:
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1152 samples x 576 lines
Product_Size
1152 samples x 576 lines
Product Size
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Primary Data Set:
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Galileo EDRs
Primary_Data_Set
Galileo EDRs
Primary Data Set
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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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Galileo
facet_what
Galileo
facet_what
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facet_what:
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Galileo Orbiter
facet_what
Galileo Orbiter
facet_what
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facet_what:
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Spectrometer
facet_what
Spectrometer
facet_what
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facet_what:
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Io
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facet_what:
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Near Infrared Mapping Spectrometer (NIMS)
facet_what
Near Infrared Mapping Spectrometer (NIMS)
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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Arizona
facet_where
Arizona
facet_where
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facet_where:
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California
facet_where
California
facet_where
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facet_where:
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Washington
facet_where
Washington
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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facet_where:
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Washington, D.C.
facet_where
Washington, D.C.
facet_where
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Image #:
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PIA02591
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UID:
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SPD-PHOTJ-PIA02591
UID
SPD-PHOTJ-PIA02591
UID
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orignial url:
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orignial_url
orignial url
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