Atlantis payload bay

The 11-day mission was a success, seeing the six-member crew fitting a new truss and solar array, in effect doubling the stations energy-generating capacity.

Atlantis is scheduled to touch down at 5:59 a.m. EDT Wednesday at the Shuttle Landing Facility at Kennedy Space Center, Fla. Landing will bring to an end STS-115’s successful mission to the International Space Station.

External Links:
Nasa Shuttle Website
Atlantis Launch Blog