... never before tried to take apart a science instrument at the 19-year-old observatory. Hubble's chief mechanic, John Grunsfeld, deftly opened up the burned-out camera and plucked out all four electronic cards that needed to be replaced ...

... loan from the University of Chicago that was once handled by the man the Hubble Telescope is named after. Astronaut John Grunsfeld, an alumnus who will serve as the chief telescope repairman, is taking it up. Edwin Hubble the astronomer for whom ...

... but at least part will be attempted, Mission Control said. "We're very proud of you," Atlantis astronaut John Grunsfeld told the weary spacewalkers. Grunsfeld and Andrew Feustel will not only pick up some of their work Monday, but they ...

... faced a final round of repairs before giving the $3 billion observatory back to space on Christmas Day. Astronauts John Grunsfeld and Steven Smith hoped to install by tonight a new radio transmitter and data recorder, as well as steel shields ...

... history. And there are more spacewalks ahead. Working in orbit 370 miles above the Earth, Discovery astronauts John Grunsfeld and Steven Smith struggled Wednesday to replace broken gyroscopes that have kept the $3 billion observatory blind ...

... foot, 25,000-pound telescope will remain in the shuttle for three days of work. Astronauts Steven Smith and John Grunsfeld were to venture outside Discovery today to replace all six of the Hubble's gyroscopes, four of which are dead with ...

... to see to the edge of the universe, tomorrow we'll give it its eyes so it can see just that," said astronaut John Grunsfeld, the chief repairman. During a spacewalk scheduled for early Thursday -- the fourth excursion for Columbia's ...