Io (an answer to the joke and a greeting to readers of this post)
I seem to remember reading that Io (one of Jupiter's Moons) was the only other celestial body in our solar systam to have active volcanoes. My good friend Alice reminded me of this yesterday when she woke me with a text telling the next The Sky at Night episode will be about volcanoes in space. Soon after realising that I hadn't actually been stirred by the fall of another wicket, I remembered this fact about Io, Alice needs confirmation from Sir Patrick, I now think I do too and maybe Io just has the most volcanism. Whatever the case, it has some which is cool so here are some facts about it.
Finally here is another blog with a volcano of the week feature- definitely a copy of mine! http://www.gishbartimes.org/2010_08_01_archive.html