“Mission to the Unknown”, Scene 2, Rocket Ship Exterior (Night)

On these albums

Doctor Who: The Daleks’ Master PlanTerry Nation & Dennis Spooner starring William Hartnell, Peter Purves & Adrienne Hill · 2001Soundtrack

Doctor Who: The Lost TV Episodes - Collection TwoVarious Artists · 2011

Source: MusicBrainz recording d8e601c2-8c94-4254-be98-fd378b1a2cea (CC0).