PIA00835: NIMS Observation of Hotspots on Io


NIMS Observation of Hotspots on Io

Caption:

Io has been imaged by the Near Infrared Mapping Spectrometer (NIMS) on Galileo. The image on the right shows for the first time the distribution of volcanic hotspots on the surface of Io, as seen by NIMS. Three of these hotspots are new discoveries, only detectable with the NIMS instrument. This image was taken during the G1 encounter on June 29 1996. The image on the left shows the same view of Io as seen by the Voyager spacecraft in 1979. At least one dozen hotspots have been identified from this NIMS image. Most of the hotspot locations can be matched with volcanic features on the surface of Io, including the vent area of the active Prometheus plume.

Background Info:

The Jet Propulsion Laboratory, Pasadena, CA manages the mission for NASA's Office of Space Science, Washington, DC.

This image and other images and data received from Galileo are posted on the World Wide Web, on the Galileo mission home page at URL http://galileo.jpl.nasa.gov.

Cataloging Keywords:

Name Value Additional Values
Target Io
System Jupiter
Target Type Satellite
Mission Galileo Voyager
Instrument Host Galileo Orbiter
Host Type Orbiter Flyby Spacecraft
Instrument Near-Infrared Mapping Spectrometer (NIMS)
Detector
Extra Keywords Grayscale, Infrared, Plume, Volcano
Acquisition Date
Release Date 1998-03-26
Date in Caption
Image Credit NASA/JPL
Source photojournal.jpl.nasa.gov/catalog/PIA00835
Identifier PIA00835