History ventures outside of our solar system in another epic exploration of the universe & its mysteries. Visit strange & unfamiliar worlds in ' Alien Planets', prepare for the worst in ' Cosmic Collisions' & uncover the secrets of our own galaxy, in ' The Milky Way'. But that's just the beginning... learn exactly what ' Dark Matter' is & how it takes up 95% of the universe; take a front row seat for the ultimate light show with ' Supernovas', & while most people heard of black holes, find out more about white holes
- which actually create matter. With 12 fascinating episodes from the epic second season of this groundbreaking series.