Before broadcasting the final movements and installation, NASA TV will replay the operations conducted earlier in the day to detach the PMM from Unity and move it toward Tranquility.

Expedition 43 Commander Terry Virts and Flight Engineer Scott Kelly of NASA will supervise the unbolting of the module from Unity and its final attachment to Tranquility. Virts and Kelly will close the hatch to the module on Tuesday, May 26, and reopen it at its new location on Thursday, May 28.

The transformation of Harmony’s space-facing and forward ports for crew arrivals will continue later this year, when a pair of International Docking Adapters (IDAs) will be delivered on the seventh and ninth NASA-contracted SpaceX cargo resupply missions. The IDAs will be attached to Pressurized Mating Adapters 2 and 3, which enable the spacecraft to equalize internal pressure with the ISS.

The PMM, originally named “Leonardo” by the Italian Space Agency that supervised its manufacture, was one of three cargo modules used to haul supplies back and forth from the station during space shuttle assembly missions. The PMM was launched for the last time to the station on the final flight of the shuttle Discovery on Feb. 24, 2011, and was installed on Unity five days later. The PMM is 22 feet long, 14 feet in diameter and weighs almost 11 tons. It has an internal volume of more than 2,400 cubic feet.

For more information about the International Space Station, visit:

http://www.nasa.gov/station

For more information about the Commercial Crew Program, visit:

http://www.nasa.gov/commercialcrew

-end-

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