As I wasted time one evening I watch the Siberian Fireball episode; one of the better ones. Siberian Fireball is a more science based episode which has 3 theories. One a meteor. Two black hole anti-matter deal. 3 extraterrestrial space ship. Was the fireball event nuclear? Eyewitness accounts make more a mystery of what happen in 1908. In search has no idea the real cause of the Siberian Fireball! Strong theory from many in science community, but no solid answer. I like the theory of anything is possible in a violent random universe. My astronomy class though it could be anti-matter. All we know is the fireball was from outer space. Let's hope one does not hit my town! Eight out of ten.