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Explanation: A volcano on Jupiter's moon Io has been photographed recently during an ongoing eruption. Hot glowing lava is visible on the left on this representative-color image. A glowing landscape of plateaus and valleys covered in sulfur and silicate rock surrounds the active volcano. Many features including several of the dark spots have evolved between February 2000, when the robot spacecraft Galileo currently orbiting Jupiter took this picture, and November 1999. Io is slightly larger than Earth's Moon and is the closest large moon to Jupiter. The above image shows a region about 250 kilometers across. How the internal structure of Io creates these active volcanoes remains under investigation.
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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: volcano - Moon - Io - eruption
Publications with words: volcano - Moon - Io - eruption
See also:
- APOD: 2026 August 25 Á Earths Shadow Visualized with Lunar Eclipses
- APOD: 2026 May 11 Á Moon Setting Behind Teide Volcano
- APOD: 2026 May 9 Á Messier Craters in Stereo
- APOD: 2026 April 15 Á The ISS Transits the Moon
- APOD: 2026 April 11 Á Artemis II: Flight Day 6
- The Bay of Rainbows
- Earthset from Orion