Not really, they've done that a few times with Cassini. See for instance: http://www.nature.com/nature/journal/v460/n7254/abs/nature08153.html http://www.nature

Not really, they've done that a few times with Cassini. See for instance: http://www.nature.com/nature/journal/v460/n7254/abs/nature08153.html http://www.nature.com/nature/journal/v460/n7254/abs/nature08... (you can get a copy of this with a title search in Google), studying the fragmentation results with its mass spectrometer while passing through the jet plumes. Another flagship Saturn mission with upgraded instruments would be very helpful.