In the Space Station Processing Facility at NASA's Kennedy Space Center workers prepare the Japanese Experiment Module to be weighed.

In the Space Station Processing Facility at NASA's Kennedy Space Center, workers prepare the Japanese Experiment Module, called Kibo, to be weighed. Also known as the JEM-PM, the module is the primary payload for space shuttle Discovery's STS-124 mission, which is targeted for launch to the International Space Station on April 24. Photo credit: NASA/Jim Cain