In the Payload Hazardous Servicing Facility the Multi-Use Lightweight Equipment or MULE carrier is lowered into the payload canister.

In the Payload Hazardous Servicing Facility at NASA's Kennedy Space Center in Florida, the Multi-Use Lightweight Equipment, or MULE, carrier is lowered into the payload canister where it will be installed. The MULE contains hardware for the STS-125 mission to service NASA's Hubble Space Telescope. The carrier will deliver the MULE and other carriers to Launch Pad 39A for installation into Atlantis' payload bay. Atlantis' 11-day flight is targeted for launch May 12. The mission will include five spacewalks in which astronauts will refurbish and upgrade the telescope with state-of-the-art science instruments. As a result, Hubble's capabilities will be expanded and its operational lifespan extended through at least 2014. Photo credit: NASA/Tim Jacobs