Wikipedia:"Space Night started in 1994 as a replacement of the test cards which were broadcast on BR at night until this time. The idea originated in the fact that the German satellite ASTRO-SPAS (see STS-80) had recorded many hours of video footage in space. The BR received this footage, edited the material and added downtempo spherical music.
As BR did not want to show the same pictures 7 days a week, both NASA and ESA as well as the German Aerospace Center were addressed. They offered more hours of footage from in and around space, which were thus included.
The broadcast quickly turned into a cult: At raves in the mid-1990s it wasn't unusual to show the images of Space Night on big TV-screens. Early in the morning after the rave it was often used to calm down, especially from 1996 and later, as Space Night's sound changed through the musical guidance by Alex Azary (a European chill-out-DJ), who provided a more electronic background music."
https://www.youtube.com/watch?v=Pk821IfAyI8&list=RDPk821IfAyI8
