An alternative technology to the chemically propelled rockets the agency develops now is called nuclearthermal propulsion, which uses nuclear fission and could one day power a rocket that ...
As the heated propellant expands, it’s ultimately exhausted out of a nozzle in much the same way as in a traditional rocket. It’s also similar to the concept of nuclearthermal propulsion ...
But for now, he says, there are other better options, such as nuclearthermal electric propulsion. Another idea is to use chemical rockets to lift off from Earth and to land on Mars. But for the ...
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