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.
Sizzling Io
Explanation: What's cooking on Io ? This active moon of Jupiter is marked with volcanoes spewing lava that is now known to be hotter than any lava on Earth . Above is the highest resolution color-enhanced image yet composed of the most active surface in our Solar System . Features as small as three kilometers are visible. Sulfur compounds cause many of Io 's unusual colors, while darker regions are probably composed of silicate rock .
| Date | July 6, 1998 |
|---|---|
| Credit | Credit: Galileo Project, JPL, NASA |
| Authors & editors: | Robert Nemiroff (MTU) & Jerry Bonnell (UMCP) |
| A service of: |
ASD at NASA / GSFC, NASA Science Activation & Michigan Tech. U. |