[DGthe3]

Fission is what is currently used. It is the process by which larger atoms such as Uranium or Plutonium are split by neutrons into smaller elements. This releases a great deal of heat plus some neutrons which then continue the process. Left unchecked this will result in a atomic explosion like in the bombs in Hiroshima and Nagasaki.

Nuclear fusion is when light elements like hydrogen are fused together releasing unimaginable amounts of energy. This is what fuels thermonuclear weapons and stars. They have built test reactors but nobody has got more energy out of them than has been put in. And they have a hard time keeping them from melting, no material can withstand the temperatures so they need to magnetically levitate the plasma inside a chamber so that . . . I'm going to far in this. Yes this is the massively powerful one