The nose of the orbiter Atlantis is dwarfed by the external tank and the twin solid rocket boosters.

In high bay 3 of the Vehicle Assembly Building, the nose of the orbiter Atlantis is dwarfed by the external tank behind it and the twin solid rocket boosters. The orbiter is being mated with the tank and boosters, already installed on the mobile launcher platform below. After the stacking, Atlantis will undergo a shuttle interface test and other prelaunch processing. Atlantis' launch window begins Aug. 28. During its 11-day mission to the International Space Station, the STS-115 crew of six astronauts will continue construction of the station and install their cargo, the Port 3/4 truss segment with its two large solar arrays. Photo credit: NASA/Troy Cryder