http://www.jpl.nasa.gov/images/io/caption_ioplume_1004.html
A volcanic plume created some 7 months ago by the volcano Tvashtar was expected to be analyzed but to NASA's suprise it was gone; replaced by new plume that rose some 500Km (over 300 miles) above the surface.
Utterly Spectacular -
This was totally unexpected," said the leader of that experiment, Dr. Louis Frank of the University of Iowa, Iowa City. "We've had wonderful images and other remote sensing of the volcanoes on Io before, but we've never caught the hot breath from one of them until now. Galileo smelled the volcano's strong breath and survived."
Stay tuned, this is just the first of hopefully many cool stories from Galileo's latest pass. Long live Galileo.
see ya, VINCE