If solved
Fusion Spacecraft Propulsion
Compact fusion reactors power spacecraft and shorten trips to Mars and asteroids significantly.
Open in the interactive tree →Fusion offers far more energy per kilogram of propellant than chemical rockets. It would require a light, compact reactor with a large net surplus, which does not yet exist even on Earth. It could cut Mars trips from months to weeks and open routes to the outer planets.
What it brings
- Fast trips to Mars and the outer planets
- Mining and industry in the asteroid belt
- Propulsion and power for space stations and settlements