Special guests Jonathan Ross, graphic novelist Alan Moore and string theorist Brian Greene, join Brian Cox and Robin Ince on stage for a special edition of the science show that boldly goes where no other science show has been before. In a special science fiction themed programme, recorded in front of an audience at London's Southbank Centre, Brian, Robin and guests discuss multiple dimensions, alternate universes and look at whether science fact is far more outrageous than anything Hollywood or science fiction authors could ever come up with.

Producer: Alexandra Feachem.