S131-E-011050 (17 April 2010) --- Backdropped by Earth’s horizon and the blackness of space, the International Space Station is featured in this image photographed by an STS-131 crew member on space shuttle Discovery after the station and shuttle began their post-undocking relative separation. Undocking of the two spacecraft occurred at 7:52 a.m. (CDT) on April 17, 2010.