ew Page 1Take a tour of NASA's most challenging project, the International Space Station. As per NASA 'due to the ISS, there is always a permanent human presence in space, as there have always been at least two people on board ISS since the first permanent crew entered the ISS on November 2, 2000. It is serviced primarily by the Soyuz, Progress spacecraft units and Space Shuttle. The ISS is currently still under construction with a projected completion date of 2010.'