Scientists Just Tested a Thruster Powerful Enough for Human Missions to Mars

NASA tested a new electric thruster that hit 120 kilowatts, setting a U.S. power record.

The experimental system uses lithium vapor and sustained extreme heat to push performance beyond previous benchmarks.

The advance could make future spacecraft more efficient and reduce fuel needs for missions beyond Earth orbit.

NASA says the technology may help enable faster crewed and robotic travel to Mars and deeper space.