U.S. shuttle Discovery lifts off, delivering new module to ISS(4)

The astronauts wave before they board the U.S. space shuttle Discovery in Kennedy Space Station. The U.S. space shuttle Discovery lifts off from its launch pad at Kennedy Space Station in Cape Canaveral, Florida of U.S., at 11:38 a.m. (1538 GMT) on Oct. 23, 2007. (Xinhua Photo)