5/5 Professor Brian Cox concludes his exploration of our place in the universe.
4/5 Brian Cox looks at how we came to understand we are not at the centre of the universe.
3/5 Brian considers the possibility of alien life - could it exist and will we ever find it?
2/5 Brian Cox tackles the question that unites Earth's seven billion people - why are we here?
1/5 Brian Cox charts our story from apes to the birth of civilisation and then to the stars.