NASA will launch an emergency
repair mission this fall to the Hubble Space Telescope, which is in danger of shutting down. NASA decided Wednesday to move up the next regularly scheduled Hubble visit to October so that spacewalking astronauts can fix the telescope's deteriorating pointing system. The mission had been set for June 2000. Two of Hubble's six gyroscopes, needed for pointing and stability, have failed since astronauts' last service call, in 1997. And a third gyroscope is partly broken and is considered unreliable.