This recent episode of Conversations with Richard Fidler speaking to author David George Haskell about his recent book, Singing with Trees.
NASA Sound of space
Fantastic recording from the space flights of Voyager I & II launched in 1977. The true ambient space sounds that come from electronic vibrations of the planets, moons and rings, electromagnetic fields of the planets and moons, planetary magnetosphere, trapped radio waves bouncing between the planet and the inner surface of it's atmosphere, charged particle interactions of the planet, it's moons and the solar wind, and from charged particle emissions from the rings of certain planets. All sounds are space sounds, there are no engine sounds from the spaceprobes.