The Sky at Night
Season 47 Episode 3 - The Hidden Universe
8.3 ?
1957
Documentary, News
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.
