NASA tests automated in-space refueling tech for deep-space missions
NASA and L3Harris are testing an automated cryocoupler to enable propellant transfer between spacecraft in Earth orbit, a key step for deep-space missions. The device acts like a fuel nozzle for orbital depots and can transfer cryogenic propellants (liquid hydrogen and oxygen) without astronauts performing spacewalks. Early tests used liquid nitrogen at extreme temperatures and included misalignment simulations; future tests will be tailored to specific mission requirements.