It was supposed to be the hardest job of Atlantis' mission. Instead, it looked like the easiest.
Spacewalkers John Grunsfeld and Andrew Feustel, working on the Hubble Space Telescope, had practiced for nearly two years to repair the Advanced Camera for Surveys, a sensitive instrument never designed to be opened by astronauts.
The camera's electronics had shorted out. Engineers decided it would be better to repair them than replace the entire camera.
It was exacting work, with Grunsfeld...Full Story