With unique access to Nasa, Brian Cox follows Perseverance rover’s search for life on Mars during a critical seven-day period as it undertakes an epic journey across the red planet.

Horizon goes behind the scenes at Nasa to discover how it is preparing for its most ambitious and daring mission: to land men - and possibly women - on the surface of Mars.

With the dream of sending humans to Mars closer than ever before, Horizon asks the world's leading experts on Mars where they would go and what they would need to survive.

The intriguing possibility of life on Mars has fuelled man's quest to visit the Red Planet. Drawing on 45 years of Horizon archive, space expert Dr Kevin Fong presents a documentary on Earth's near neighbour.

The attempt to send and land astronauts on Mars risks billions of dollars and the lives of those brave enough to attempt it. Is the possible benefit really worth the risk? And is it really achievable?

The documentary series about the solar system examines how our understanding of the evolution of life on earth has changed, and explores the evidence for life on other planets. In 1976, two robotic probes suggested that the surface of Mars was dead. But the latest research reveals that this may not be the case and that it is possible that life on earth may have evolved from Mars.

Film following Nasa psychologist Dr Al Holland as he prepares Mars-bound astronauts for the psychological demands of a three-year absence from Earth.

Brian Cox shows how a planet's size can make the difference between life and death.