Orbital are an English electronic music duo from Otford, Kent, England, consisting of brothers Phil and Paul Hartnoll. The band's name is taken from Greater London's orbital motorway, the M25, which was central to the early rave scene during the early days of acid house. Additionally, the cover art on three of their albums showcase stylised atomic orbitals. Orbital have been critically and commercially successful, known particularly for their live improvisation during shows.