Professor Cox uses a combination of the latest science and footage from his previous television programmes to explore if mankind is on the verge of a new age of space travel and asks how far can we go in our exploration of the cosmos?
In this edition, Brian uses memorable moments from past programmes to examine one of the most profound questions humanity has ever asked - Are we alone in the universe? He explains why the search for alien life should be taken seriously.
Brian looks at gravity, revealing it to be far more than just the force that makes things fall to the ground. He recalls memorable TV moments including meeting a space capsule returning astronauts from the International Space Station.
In the final programme in the series, Brian explores the enigma of time - a phenomenon we take for granted but which is one of the biggest mysteries in the universe. He recalls highlights from his TV series that touch upon this conundrum.
