Expedition 20 is the first ISS crew of six.
It will be designed to become a sleep module for the ISS crew.
STS-108 returned to Earth with the previous ISS crew of three men.
This test and evaluation centrifuge would have the capability to become a sleep module for ISS crew.
Expedition 20 was the first ISS crew of this size.
The spacecraft carried fresh food and supplies for the ISS crew.
Ryder and the ISS crew speculate that the aliens may have misguided good intentions.
As well as the shuttle crew, the ISS crew was key to this mission.
This mission increased the ISS crew to three.
It was the first ISS crew to include three Russians at once.