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servicing mission 4's goal was to bring

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hubble's scientific capability to its

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peak performance but safety concerns

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after the tragic loss of the space

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shuttle columbia and its crew in 2003

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canceled the mission

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after two years of safety review and

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study nasa administrator michael griffin

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had an exciting announcement we are

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going to add a shuttle servicing mission

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to the hubble space telescope to the

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shuttle's manifest to be flown before it

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finally the space shuttle atlantis

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launched and hubble's final servicing

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mission began

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astronauts installed two new science

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instruments brought two others back to

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life replaced gyroscopes and batteries

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installed new insulation and added a

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soft capture mechanism

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servicing mission 4 left hubble

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scientifically more powerful than ever

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before today hubble observations

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continue to change our understanding of

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the universe and its journey of