Hearts of Space is an American weekly syndicated public radio show[4] featuring music of a contemplative nature[5] drawn largely from the ambient, new-age and electronic genres, while also including classical, world, Celtic, experimental, and other music selections.

[12] Shortened to a one-hour version, it entered syndication on public radio on January 1, 1983, and quickly grew in popularity, signing its 200th station within three years.

Episodes, or "transmissions," are thematic, commencing with a voice-over introduction by Hill, followed by almost an hour of uninterrupted segue-mixed music.

[15] A number of other individuals have worked on Hearts of Space, including guest producer Ellen Holmes who created a series of "Adagio Recordings classical spacemusic" shows.

A running gag during the film, which sported an ambient noise soundtrack similar to the music typical of the show, was to imitate the announcer of the program.

In a 1981 interview with Tom Snyder for The Tomorrow Show, convicted criminal Charles Manson said that he would listen to Hearts of Space when a radio was available to him.