Season 1Episode 248m
Alien Worlds: The Search for Second Earth
2021-11-036.2 rating
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?
2021-11-036.2 rating
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?