NASA's Jet Propulsion Laboratory (JPL) is making strides in electric propulsion technology, which could play a crucial role in future human missions to Mars. The recent development of a lithium-fed magnetoplasmadynamic (MPD) thruster represents a significant advancement, operating at 120 kW, 25 times more powerful than the thrusters on the Psyche spacecraft. This electric thruster utilizes electrical energy to ionize inert gases, allowing for efficient propulsion that consumes 90% less fuel than traditional chemical rockets. While Psyche has demonstrated the feasibility of electric propulsion, reaching speeds of 12,333 mph, the new MPD thruster aims to achieve between 500 kW and one megawatt of power, which would be necessary for a crewed mission to Mars. However, challenges remain, particularly in managing the heat generated during operation, with temperatures reaching 5,000 degrees Fahrenheit. Despite these hurdles, NASA is optimistic about the potential of this technology. James Polk, a senior research scientist at JPL, highlighted the significance of the recent tests, stating, 'It's a huge moment for us because we not only showed the thruster works, but we also hit the power levels we were targeting.'