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Released: February 26, 2001
This simulated flyover of a volcanic region called Tvashtar Catena on Jupiter's moon Io was created from three-dimensional modeling of the area based on images taken by NASA's Galileo spacecraft during close approaches to Io in November 1999 and February 2000.
A catena is a chain of volcanic depressions. The animation takes the viewer over one dark-bottomed depression, then past a strip of dark lava less than a year old, and ends over an active eruption of glowing lava. The length of the crescent of red lava is about 60 kilometers (37 miles).
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.
This image and other images and data received from Galileo are posted on the World Wide Web, on the Galileo mission home page at http://www.jpl.nasa.gov/galileo. Background information and educational context for the images can be found at http://www.jpl.nasa.gov/galileo/sepo.
Image Credit: NASA/LPL/University of Arizona
http://photojournal.jpl.nasa.gov/cgi-bin/PIAGenCatalogPage.pl?PIA02587
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