An ion test engine has set a new record for continuous operation.

An ion test engine has set a new record for continuous operation.

The NEXT ion thruster is one of NASA’s latest generation of engines. With a power output of seven kilowatts, it’s over twice as powerful as the ones used aboard the unmanned Dawn space probe. Yet it is simpler in design, lighter and more efficient, and is also designed for very high endurance. Its current record of 43,000 hours is the equivalent of nearly five years of continuous operation while consuming only 770 kg (1697.5 lbs) of xenon propellant.

This engine will make the unmanned exploration of the asteroid belt extremely easy and practical.

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