13 miliardi di anni: in viaggio nell'universo

In the first episode, the program will begin by explaining what we understand today about the immense initial explosion: the Big Bang. Researchers believe that fundamental things happened in the first billionths of a second: first the birth of space-time and gravity, then the appearance of the first building blocks of matter, but also of antimatter. Where the antimatter (very abundant, it seems, initially) has ended up today is unknown: probably in this turbulent phase, matter and antimatter, meeting, annihilated each other, transforming into pure energy. However, researchers believe, it cannot be ruled out that there is still antimatter around in the Universe; and that perhaps antistars and antigalaxies exist.