Among the "sounds of space" collected by University of Iowa instruments: the eerie sounds and bizarre features of Saturn's radio emissions captured by the Cassini spacecraft. Whooshing winds and theremin-ish wails - I love it because it sounds exactly like what I think outer space should sound like.
Saturn radio emissions
Thinking of sampling this stuff? Legendary composer Terry Riley beat you to it: the ubiquitous Kronos Quartet sometimes performs his 2002 piece "Sun Rings" using some of these sounds. Couldn't find any recording info, therefore I unfortunately cannot direct you to a cd. So just play a Sun Ra album and these sounds at the same time.