(10/13/1999) -- In the Payload Hazardous Servicing Facility clean room, part of the flight hardware for the Hubble Space Telescope Servicing mission is on display for media representatives. This mission is designed to replace aging parts on the nine-year-old observatory and to upgrade some of its functioning systems. During the flight, the astronaut crew will replace all six of Hubble's gyroscopes, a fine guidance sensor, the observatory's main computer, and other equipment. The 10-day mission is scheduled to launch no earlier than Dec. 2 at 4:32 a.m. EST from Launch Complex 39