BILL HEMMER, CNN ANCHOR: All right. To space now. One spacewalk down, four to go, for the crew of the shuttle Columbia. Overnight, two of the astronauts began a major overhaul and upgrade of the 12-year-old Hubble space telescope. Miles O'Brien now, tracking the progress in space from here on planet Earth.</s>JOHN GRUNSFELD, ASTRONAUT: Oh, what a beautiful view.</s>MILES O'BRIEN, CNN CORRESPONDENT (voice-over): For spacewalker, astronomer and self-proclaimed "Hubble hugger" John Grunsfeld, it was an encore performance. He logged two walks outside the space telescope in December of 1999. Back then, Hubble was out of commission after some gyroscopes failed. This time, Hubble is working fine and Grunsfeld is leading the repair team, hoping to make it better. To that end, he and his spacewalking sidekick, Rick Linnehan, ventured into the void give Hubble a new solar wing, and more than a prayer for added amperage. The old solar arrays, on Hubble for nine years, rolled up like window blinds and were a bit temperamental. The new version is rigid and is 2/3 the size of the old wing, and yet produces 20 percent more electricity. On Earth, it weighs more than 600 pounds, but in the absence of gravity, Linnehan and Grunsfeld appear to have no trouble attaching it to Hubble. The only bothersome moment came as Linnehan tried to attach the old array to Columbia's cargo bay. A bulky bolt refused to cooperate, but finally unfroze. And that set the stage for the solar panel deployment. The new wing unfolded like a book, hopefully opening a new chapter for Hubble. Miles O'Brien, CNN.
Shuttle Astronauts Begin Overhaul on Hubble