Explanation: This was home. Last week, the STS-121 crew of the
Space Shuttle Discovery undocked from the International Space
Station (ISS) and returned to Earth. As the shuttle departed the
space station, they took the above image. Visible on the ISS are
numerous modules, trusses, and long wing-like solar panels. The
space shuttle crew spent over 12 days calling the space station
home. The shuttle crew resupplied the space station and prepared
it for future assembly. The ISS's crew of two was expanded to
three by the shuttle visit, and now includes one Russian, one
American, and one European.