View of the ISS from the orbiter during separation on STS-121

S121-E-07573 (15 July 2006) --- Backdropped by a blue and white Earth, the International Space Station moves away from Space Shuttle Discovery. Earlier the STS-121 and Expedition 13 crews concluded almost nine days of cooperative work onboard the shuttle and station. Undocking of the two spacecraft occurred at 5:08 a.m. (CDT) on July 15, 2006.