Series exploring topical scientific issues. Around the world, astronomers are using a new generation of super-telescopes to hunt for the most mysterious objects in the universe. Their search for young stars, black holes and even other forms of life promises to rewrite the story of the heavens. This film follows the men and women who are pushing the limits of science and engineering in some of the most extreme environments on earth. But most striking of all, nobody really knows what they will find out there. episode 2
