First mission to bring back samples from the moon since 1976 started successfully

[Mnementh]

SvennoJ said:

Mnementh said:

Are you sure? The main reason it takes so long to get to Mars is, that the probes aren't under full thrust the whole time. Because fuel would be needed, which in turn would need to be accelerated at first which needs more fuel to accelerate all the fuel. I don't see how nuclear propellants solve that problem.

If I look here, I see the proposed nuclear rocket engines, they are hypothetical: https://en.wikipedia.org/wiki/Rocket_engine#Nuclear

You need a lot less nuclear fuel to go the distance, thus you take a lot less weight.

From google:
One uranium fuel pellet (about 10 grams) creates as much energy as one ton of coal, 149 gallons of oil or 17,000 cubic feet of natural gas.

You can be under full thrust until the halfway point and reverse

You need some propellant. That you will lose in the effect. That is some advantage of chemical fuels: the exhaust gases are used as propellant. For nuclear rockets you need to take some gas with you, which will be heated to expand and propel the rocket.