关于这张图
KENNEDY SPACE CENTER, FLA. -- Orbiter Discovery begins rolling into the Vehicle Assembly Building for stacking with an external tank and solid rocket boosters for its launch on mission STS-103. The launch date is currently under review for early December. STS-103, the third Hubble Space Telescope servicing mission, is a "call-up" due to the need to replace portions of the pointing system, the gyros, which have begun to fail on the Hubble Space Telescope. Although Hubble is operating normally and conducting its scientific observations, only three of its six gyroscopes are working properly. The …
