The celebrated British dance music act Orbital have reformed after 5 years and headline the Bluedot Science technology and music festival in Cheshire next weekend. Formed by brothers Paul and Phil Hartnoll at the start of the acid house explosion in the late 80’s – Orbital are famed for spectacular live performances in front of banks of computers and synthesizers. We talked to the brothers about science, the Gallagher brothers and the history of Rave.