BBC Four Thursday

Hannah Fry and Dara Ó Briain of Radio 4's Curious Cases join the team in front of a studio audience to answer viewers' queries about space

Julia Bradbury visits Cornwall, where she traces a railway line that has not operated for 140 years, and explores the impact of tin and copper reserves near Redruth

A retrospective look at the television appearances of Hollywood icon Richard Burton, illustrating his career milestones and highlights. Narrated by Sylvia Syms

A Scottish army officer is placed in command of a unit of Australian troops defending Tobruk from German attack. Second World War adventure, starring Richard Burton and James Mason

The life of the actor, as told through private diaries he wrote at the height of his fame and offering a rare glimpse at the man behind the myth

A Roman centurion oversees Christ's crucifixion, an experience that moves him to convert to the Christian faith, angering the Emperor. Drama, with Richard Burton and Jean Simmons

A retrospective look at the television appearances of Hollywood icon Richard Burton, illustrating his career milestones and highlights. Narrated by Sylvia Syms

The life of the actor, as told through private diaries he wrote at the height of his fame and offering a rare glimpse at the man behind the myth

Julia Bradbury visits Cornwall, where she traces a railway line that has not operated for 140 years, and explores the impact of tin and copper reserves near Redruth

Alan Yentob examines the darker side of one of Britain's most original and inventive artists, as she delves deep into the history, cinema and art of America