When the spacecraft Cassini passed through a gap in Saturn’s rings June 30,

it was bombarded by tiny ring particles — around 100,000 hits in 5 minutes.

This was expected, and no harm was done. The particles in question were

only the size of those in smoke. Some of the researchers have turned the

bombardment into sound, though, and if you link to their site you can

“hear” the passage through the ring plane a billion miles away. Kinda

creepy. Links and more details here.