"A Huge Ever Growing Pulsating Brain That Rules from the Centre of the Ultraworld" is the debut single by the ambient house group the Orb. It was originally released in October 1989 and made the UK Singles Chart in 1990, peaking at #78. The 'Peel Session' version was also voted into #10 place in John Peel's 1990 Festive Fifty. In April 1991, the track was released on the debut album The Orb's Adventures Beyond the Ultraworld. The title is taken from a sound effects track from Blake's 7 on BBC Sound Effects No. 26 - Sci-Fi Sound Effects titled "The Core, A Huge Evergrowing Pulsating Brain which Rules from the Centre of Ultraworld".