Robotic Refueling Mission 3 (RRM3)

iss058e015664 (2/19/2019) --- NASA astronaut Anne McClain and Canadian Space Agency (CSA) astronaut David Saint-Jacques shown during the installation of the Robotics Refueling Mission (RRM)-3 on the JEM Airlock slide table in the KIBO module aboard the International Space Station (ISS). Robotic Refueling Mission 3 (RRM3) demonstrates the first transfer and long term storage of liquid methane, a cryogenic fluid, in microgravity. The ability to replenish and store cryogenic fluids, which can function as a fuel or coolant, can help enable long duration journeys to destinations like the Moon and Mars.