What Kind of Fusion Is There?

Fusion is star power. That's how stars power themselves. It's essentially atoms of hydrogen smashing together to form helium and helium is a little bit lighter. Some of the mass is converted directly into energy equals MC squared. And ever since we discovered that stars are doing this, we're like, we want this. We want to have controlled fusion on the earth. But Bob, remember that the trivia, most of the energy doesn't come. It comes from hydrogen combining into other forms of hydrogen.