Astronauts Blog on Saving the Hubble Telescope

NASA is taking on a special mission: a space shuttle flight to rescue the Hubble Space Telescope, whose batteries, gyroscopes and other systems might soon fail if NASA does nothing about them. Seven astronauts plan to fly the Shuttle Atlantis to rendezvous with the Hubble later this year. Their mission has been labeled STS-125. ABC News has been given special access to them as they prepare for their flight. Below, spacewalker Mike Massimino sends the first in an occasional series of blog...Full Story