English: Space shuttle Atlantis is featured in this image photographed by an Expedition 23 crew member on the International Space Station soon after the shuttle and station began their post-undocking relative separation. Undocking of the two spacecraft occurred at 10:22 a.m. (CDT) on May 23, 2010, ending a seven-day stay that saw the addition of a new station module, replacement of batteries and resupply of the orbiting outpost.