The Science Instrument Command and Data Handling Unit is moved toward the Multi-Use Lightweight Equipment Carrier in the background it will be installed.

In the Payload Hazardous Servicing Facility at NASA's Kennedy Space Center in Florida, the Science Instrument Command and Data Handling Unit, or SIC&DH, is moved toward the Multi-Use Lightweight Equipment Carrier in the background, where it will be installed. The SIC&DH will be installed on the Hubble Space Telescope during space shuttle Atlantis' STS-125 mission. This unit will replace the one that suffered a failure aboard the orbiting telescope on Sept. 27, 2008. Atlantis is targeted for launch on May 12. Photo credit: NASA/Dimitri Gerondidakis