Antimatter, real or science fiction?

Have you seen the movie ‘Angels and Demons’ with Tom Hanks? In that movie, people tried to destroy the Vatican with antimatter, produced at CERN (Conseil Européen pour la Recherche Nucléaire / European Council for Nuclear Research).

So what is antimatter? Well, in the beginning of the universe there was matter and antimatter. Matter is what we and everything around us is made of. Antimatter is the opposite of matter. If the two collide, they annihilate each other, producing large amounts of energy. 0.5 grams of antimatter + 0.5 grams of matter create an explosion as powerful as the atomic bomb that destroyed the city of Hiroshima in World War Two! This is because a matter and antimatter explosion is about 100% efficient at turning matter into energy, whereas an atomic bomb is only about 1% efficient.