Mission Specialists Michael Good and Garrett Reisman began the third and final spacewalk of the STS-132 mission at 6:27 a.m. EDT.

The spacewalkers' first task was the installation of an ammonia jumper on the port 4 and 5 truss. Then they finished the last of the battery replacement work, swapping the remaining two batteries and installing a battery that was left in a temporary stow position from the last spacewalk.

The final planned task is the retrieval of a Power and Data Grapple Fixture (PDGF) from the orbiter's payload bay to bring inside the station at the end of the spacewalk. The PDGF will be installed to the Zarya module's exterior on a spacewalk later this summer.

The space shuttle crew gets a little break from the busy pace of the last several days. Today they are working with the new Rassvet module and preparing for a third spacewalk, but the shuttle astronauts will have some off-duty time as well.

The first tasks of the day focused on the new module, Mini-Research Module-1, also known as Rassvet, which was attached to the International Space Station Tuesday. Expedition 23 Commander Oleg Kotov and Flight Engineer Alexander Skvortsov performed leak checks in the Russian segment before opening hatches around 6:52 a.m. EDT.

The shuttle crew will have a few hours of off duty time in the afternoon, but otherwise, the day will largely focus on preparations for the third and final spacewalk. Mission Specialists Garrett Reisman, Michael Good and Stephen Bowen will gather and prepare the tools needed and configure the airlock. Commander Ken Ham, Pilot Tony Antonelli and Mission Specialist Piers Sellers will join them to review the procedures before Reisman and Good settle in to spend the night in the Quest module as part of the "camp out" for their excursion.