The Sky At Night - The Hidden Universe

Seizoen: 2003 - Aflevering: 3 / 603 - Eerst uitgezonden: 02 maart 2003 - Episode ID: 587948

We don't know what it is, we can't see it and yet staggeringly it makes up 90% of our Universe. For astrophysicists, dark matter has proved to be an elusive and mysterious substance. In this episode, Patrick Moore talks to Professor Carlos Frenk about the Universe's darkest secret.