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They will spend most of the spacewalk working separately, with Thomas inspecting the Station’s radiator and spending most of his time maintaining the Dextre multipurpose robotic hand.

The next day, ground control will use the Station’s robotic arm to move the disconnected adapter to an upwards-pointing port on the European-built Node-2 that connects the Kibo, Destiny and Columbus laboratory modules. 

Shane will return outside with NASA astronaut Peggy Whitson to reconnect the adapter at its new port and install protective covers, as well as installing an upgraded communications computer.

The third spacewalk will see Thomas venturing out with Peggy. They will replace a power unit for external science facilities, install new antennas and cameras, and work on the AMS-02 antimatter hunter. 

If Thomas performs these two sorties he will total three during his six-month mission, matching his French colleague Philippe Perrin for a single mission.

The three spacewalks impose a heavy workload on the hundreds of people working on the ground as well as for the astronauts in space because they must be carefully choreographed and prepared in detail.

Assigning another two to Thomas is a testament to the training received by ESA astronauts at the agency’s centre in Cologne and partner sites around the world.

More details will follow on the Proxima mission blog and ESA social media channels when the dates are confirmed.