关于这张图
A shipping container with payload flight hardware for the Third Hubble Space Telescope Servicing Mission (SM-3A) sits on a flatbed trailer for transfer to the Payload Hazardous Servicing Facility where it will undergo final testing and integration of payload elements. Mission STS-103 is a "call-up" mission which is being planned due to the need to replace portions of the Hubble's pointing system, the gyros, which have begun to fail. Although Hubble is operating normally and conducting its scientific observations, only three of its six gyroscopes are working properly. The gyroscopes allow the t…