Airs Tuesdays at 9pm/8c on HISTORY. Ours is a universe of energy, from powerful jets ejected from black holes to the raw nuclear fury of our Sun. But, the total amount of energy in the universe maintains perfect equilibrium--no more can be added or taken away. Because of this, there are enormous amounts of energy being transferred...electric, thermal, kinetic and magnetic energy are just a few that keep our universe balanced--and create awesome cosmic events and stellar displays. Visit the official fan page at http://facebook.com/TheUniverse, follow HISTORY on Twitter at http://twitter.com/History_Daily and visit the official website at http://history.com/theuniverse.