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CAPE CANAVERAL, Fla. - In the Operations and Checkout Building at NASA's Kennedy Space Center in Florida, the astronauts of space shuttle Endeavour's STS-130 crew put on their launch-and-entry suits before heading to the Astrovan for the ride to Launch Pad 39A. Pilot Terry Virts, seen here, checks the fit of his suit's helmet. The primary payload for the STS-130 mission to the International Space Station is the Tranquility node, a pressurized module that will provide additional room for crew members and many of the station's life support and environmental control systems. Attached to one end…