see more

HAMPTON, VA - MAY 10: Eileen Collins (L), Mission Commander for NASA shuttle flight STS-114, inspects one of the Passive Experiment Containers (PEC) in a clean room at the NASA Langley Research Center May 10, 2002 in Hampton, Virginia. The two PECs house about 750 experiments that will be attached to the International Space Station which is scheduled to launch in January 2003. (Photo by Jeff Caplan/NASA Langley/Getty Images)

HAMPTON, VA - MAY 10:  Eileen Collins (L), Mission Commander for NASA shuttle flight STS-114, inspects one of the Passive Experiment Containers (PEC) in a clean room at the NASA Langley Research Center May 10, 2002 in Hampton, Virginia. The two PECs house about 750 experiments that will be attached to the International Space Station which is scheduled to launch in January 2003.  (Photo by Jeff Caplan/NASA Langley/Getty Images)