Astronomy Picture of the Day
    


Zal Patera on Jupiter's Moon Io
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Zal Patera on Jupiter's Moon Io
Credit & Copyright: Galileo Project, SSI, University of Arizona, JPL, NASA
Explanation: The Galileo orbiter's flyby of Io last November captured an unusual part of Jupiter's volcanic moon. From 26,000 kilometers away, Zal Patera was found to be a cauldron of flowing lava, gaseous vents, and tremendous peaks. Red lava can be seen in the above picture erupting along the base of the volcanic caldera, while cooling black lava lines the edge of a volcanic plateau. Shadow lengths indicate that the top of Zal Patera towers nearly 5 kilometers over Io's molten surface. Galileo zoomed past Io again last month, and has begun beaming back images taken only 200 kilometers over Io's surface.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Based on Astronomy Picture Of the Day

Publications with keywords: Jupiter - Io - patera - Zal Patera
Publications with words: Jupiter - Io - patera - Zal Patera
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