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Astronaut Michael Good rides Atlantis' robotic arm to the exact position he needs to be to continue work on the Hubble Space Telescope on May 17, 2009, during Servicing Mission 4. In addition to installing two new instruments and repairing two others, the mission involved replacements to Hubble's batteries, Fine Guidance Sensors, and protective blankets, among with other upgrades and fixes.

Observatories, Photographs