Creeped me right the freak out! Sounds like something from a 1950s horror movie, or something being dragged across a chalkboard. The source of the sounds are Saturn’s Northern and Southern Lights.
Whoa. I love this stuff; I’ve heard earthquakes, northern lights and the like, but this is freakin’ awesome sounding!
Too cool! 
It almost sounds like someone playing around with a theremin. Too cool, though, that that’s actually sounds from another planet…
“Welcome, gentlemen. I am Doctor Edward Morbius…”
Somehow, it seems completely appropriate that outer space “sounds” like that. 
And I see my old favorite “Cassini Encounters Saturn’s Bow Shock” is on another part of the [url=http://www-pw.physics.uiowa.edu/space-audio/]space audio page. Double