Monday, May 24, 2010

Moon of the Day - Io

Today's moon is Io, the innermost of Jupiter's four Galilean satellites.

Io is the most geologically active object in the solar system, with over 400 active volcanoes. These volcanoes spew sulfur and sulfur dioxide hundreds of kilometers above the surface, and give Io its unusual coloration.

1 comment:

  1. This is such a stunning image. I find jupiter's moons so intriguing.