Oh cmon, do my work for me and tell me why this picture of Jupiter's moon Io is interesting. I forget. Could it be that this shot was taken by the craft Cassini, on its way past Jupiter this past Spring?
All I know is that Io is about the same size as Earth's own moon, and that it's the most volcanic item in the solar system, which is weird considering that it's in the middle of nowhere. Shouldn't it have cooled down by now?