Astronauts John Grunsfeld and Drew Feustel take a picture as they drift over Houston, Texas, home of the Johnson Space Center.
While working on the removal and replacement of one of the Fine Guidance Sensors (FGS), astronauts John Grunsfeld and Drew Feustel take a moment to snap a photo.
Welcome to the Hubble Space Telescope Servicing Mission 4 Blog
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ESA/Hubble Outreach Coordinator Colleen Sharkey blogs live from the launch site at Kennedy Space Center in Florida, USA and from Goddard Space Flight Center in Greenbelt, Maryland, where a team of European engineers and scientists provide mission support.