Universe · S1 · E2
Alien Worlds: The Search for Second Earth
Professor Brian Cox questions whether we are alone in the universe. There might be more planets than stars in our galaxy - but will we find a second Earth?
About this episode
Professor Brian Cox questions whether we are alone in the universe. There might be more planets than stars in our galaxy - but will we find a second Earth?
Season 1
1The Sun: God Star
45 minOct 27, 2021
Since the first star lit up the universe, they have been engines of creation. Professor Brian Cox reveals how, ultimately, stars brought life and meaning to the universe.
2Alien Worlds: The Search for Second Earth
48 minNov 3, 2021Now viewing
Professor Brian Cox questions whether we are alone in the universe. There might be more planets than stars in our galaxy - but will we find a second Earth?
3The Milky Way: Island of Light
46 minNov 10, 2021
A space mission discovers the dramatic history of the Milky Way. Professor Brian Cox reveals how our galaxy endured multiple collisions as rival galaxies fought for survival.
4Black Holes: Heart of Darkness
47 minNov 24, 2021
Prof Brian Cox journeys into a supermassive black hole - a monster that can destroy worlds, stop time, and is forcing us to reassess our understanding of reality.
5The Big Bang: Before the Dawn
46 minDec 1, 2021
It’s the ultimate question: why are we here? Cutting-edge space missions take us back 13.8 billion years to the very beginning – the origin of the Universe.