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A special ‘Question Time’ edition of the programme, recorded at The Venue in De Montford University, Leicester, as part of the British Science Association’s annual science festival.

Chris, Maggie and Pete are joined on stage by planetary scientist Dr Suzie Imber and astronomer Professor Nial Tanvir to answer questions from viewers, covering all things astronomical – from the size of the universe to the possible nature of alien life.

Chaired by Dallas Campbell.