The Crab Nebula

In the year 1054 a new star, or Supernova, appeared. It was a star so brilliant that it rivalled Venus and was said to be visible in daylight. It was two years before it faded away. Modern astronomers now know that this was the explosion that produced the Crab Nebula. Tonight Patrick Moore talks to Dr Vinicio Barocas about the Crab Nebula and its mysteries.