During their visit at the Space Station, the NASA crew expanded the crew quarters at the ISS, along with installing a second toilet, kitchen and exercise equipment, and a recycled drinking water system.
The next NASA space shuttle mission is STS-119, which is now scheduled to launch on February 12, 2009.
Space shuttle Discovery will deliver the fourth starboard Integrated Truss Segment (S6) to the ISS, and its astronauts will assemble it.
The S6 will become the fourth set of solar arrays and batteries to the ISS.
Additional NASA information on the STS-126 mission is found at: "NASA Mission STS-126."
Information about the U.S. crew for STS-119 is found at: "NASA Mission STS-119."