Please inform the rest of us, the unwashed plebs, exactly what technology exists to get us off this rock to the moom that isnt chemistry based and can be used in the next 20 years
I remember a few videos of launching small rockets with a ground based laser from some twenty years ago. Haven’t laser technology improved since?
Fission reactors have the same problem. It is possible to use them in space but not to get into space.
Fission rockets are useless for launching to space because the thrust is too low, or the weight is too high. They could be useful in space because their higher exhaust velocity. But high exhaust velocity means low thrust.