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APOD
Astronomy Picture of the Day
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
Lava Fountain on Jupiter's Io
Explanation: A lava fountain shooting over a kilometer high has been discovered on Jupiter 's moon Io . The robot Galileo spacecraft orbiting Jupiter photographed the volcanic eruption during its close flyby of the moon late last month . The fountain is visible in the above mosaic of images from the flyby . The lava plume was so bright it saturated Galileo's camera, and so has been digitally reconstructed in false color. The hot lava appears to be shooting from a 20-kilometer long canyon on Io's active surface .
| Date | December 20, 1999 |
|---|---|
| Credit | Credit: Galileo Project, SSI, University of Arizona, JPL, NASA |
| Authors & editors: | Robert Nemiroff (MTU) & Jerry Bonnell (UMCP) |
| A service of: |
ASD at NASA / GSFC, NASA Science Activation & Michigan Tech. U. |