ISS023-E-020043 (7 April 2010) --- This nadir, 800mm view of the portside top part of Discovery's cabin was provided by one of the Expedition 23 crew members onboard the International Space Station. The shuttle was in the midst of a back-flip, performed to enable the station's cameras to survey it for possible damage. The rendezvous and subsequent docking occurred early on April 7. Once the Discovery crew joins the Expedition 23 crew aboard the orbital complex, nine men and four women will begin several days of joint activities, including three spacewalks.