ISS016-E-005885 (25 Oct. 2007) --- The underside of the Space Shuttle Discovery is featured in this image photographed by an Expedition 16 crewmember during a backflip maneuver performed by the approaching visitors (STS-120) to the International Space Station. Visible are a landing gear door (large square at center) and an external tank (ET) umbilical door (lower left).