Sound Ship (Descender 1) is a custom-built spacecraft designed to drop a sound from the edge of space, 33,722 metres into the stratosphere, with a payload of aeolian harps, tracking devices and recording equipment designed to capture both audio and moving image.

Its creators, David Haines and Joyce Hinterding, are our guests on this episode of The Constellations, talking about their work that incorporates sound art, performance, science, photography, computer game technology and more.