Deep Space Opportunities
It would be weird if we told you that space travel could run just on solar energy or something like that. While we are working with things that can use this, space travel needs a more reliable energy source. Nuclear fusion gives that to us. And if properly made for a ship, it could power any and everything on the ship for hundreds to thousands of Earth years. In fact, the energy should last longer than the ship itself. It is quite likely the engines will run off a separate power source while the rest of the ship works off of another. Things like controlling gravity on a ship or anything else we’d want to do will require a ton of energy. Therefore, having nuclear fusion and using it in a power source like this, will be critical for humans.