The Russian Plasma Engine.
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And it would also be phenomenal because a lot of money would be saved on the mission, since a mission to Mars would currently last at least 2 years, but of course if you can travel to Mars like many for 60 days, in two months, being there doing what you have to do and returning in another two months also means that you need to spend much less on food, oxygen and supplies for the astronauts, it would be a huge saving for space travel.
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The Russians have presented a prototype of a plasma engine, the Rosatom company presented it on February 7, Rosatom scientists have developed that prototype, which is an electric rocket engine based on a magnetic plasma accelerator, it has a thrust of at least 6 Newtons and according to the researchers, a ship pushed by that engine could reach 100 km per second, which would be phenomenal to be able to explore the solar system.
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China is developing its own, the United States is also developing it through NASA and I think they are all based on one known as Vasim, the interesting thing is that it was also a propulsion engine for variable specific impulse magnetoplasma space vehicles. It is the precursor to all of these, and it was created by a company directed by the Costa Rican astronaut flanking Chang Díaz and that is the engine that converts electricity into plasma and that is what produces the thrust but of course it needs electricity it needs energy and that is why in the Russian case it would be nuclear energy of fission.
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