Interesting. What it appears like is two objects collide, like billiard balls, and in the process of the collision something is ejected that lands on the surface of Jupiter. Stan > Here is a five-frame animated GIF from this morning of Io (moving left > to right) passing in front of Ganymede. > > http://www.pbase.com/polakis/image/112287531 > > The planning software showed Io partially eclipsing Ganymede, but that > detail is beyond the level of my images. > > Tom > > -- > See message header for info on list archives or unsubscribing, and please > send personal replies to the author, not the list. > > -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.