NASA Astronauts Finish Hubble Space Telescope Repairs

NASA astronauts aboard the shuttle Atlantis finished repairs and upgrades to the Hubble Space Telescope today, part of a mission to extend the orbiting observatory’s life by five years.

During the last of their mission’s five spacewalks, astronauts Andrew Feustel and John Grunsfeld replaced the second of two 460-pound (209-kilogram) battery modules, which provide power to the telescope when its solar arrays aren’t exposed to the sun.