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by the year 2002 hubble had done more

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than make a name for itself

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hubble had changed how we see the very

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galaxies became familiar neighborhoods

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to explore

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far off planets felt like old friends

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and nebulas a beautiful sight to behold

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and with servicing mission four coming

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up quickly the excitement was almost

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palpable for the new wonders hubble was

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about to uncover with its

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state-of-the-art upgrades

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that was until servicing mission 4 was

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canceled

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[Music]

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hubble's servicing mission 4 originally

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planned for the year 2004 was designed

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to bring hubble's scientific equipment

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to its peak performance

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[Music]

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this would ensure hubble would stay

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operational as long as possible since

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[Music]

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however in the early stages of preparing

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for this important mission

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disaster struck

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[Music]

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the loss of this valiant crew is

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something we will never

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be able to get over and certainly the

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families of all them

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we have assured we will do everything

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everything we can possibly do

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to guarantee that they work

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the world was shocked after the brave

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crew on space shuttle columbia was lost

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upon re-entry through earth's atmosphere

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soon after former nasa administrator

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sean o'keefe canceled hubble's final

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servicing mission over concerns about

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the safety of hubble servicing

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astronauts

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nasa tried to keep the spirit of hubble

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alive by switching to an entirely remote

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robotic servicing mission but concluded

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that it would be too expensive and would

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not be developed in time to be useful to

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hubble before it would become

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non-operational

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just under three years ago

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nasa had to announce

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a very troubling decision that decision

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being to cancel shuttle servicing

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mission 4

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for the hubble space telescope

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and today i'm here to announce a much

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more pleasant decision on behalf of the

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we are going to add a shuttle servicing

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mission to the hubble space telescope to

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the shuttle's manifest to be flown

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before it retires

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the news everybody was waiting for

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servicing mission 4 was reinstated and

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do

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[Music]

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it's a great day to go fly a great

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mission good luck godspeed we'll see you

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back

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is

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[Music]

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surfacing mission 4 was going to be one

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of hubble's most ambitious missions to

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date

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right away the astronauts of servicing

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mission 4 were tasked with installing a

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brand new instrument into hubble

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wide field camera three

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but this instrument didn't go in without

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a fight

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one singular bolt stood in the way of

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installing this instrument

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[Applause]

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this new panochromatic camera would

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allow astronomers to better understand

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galaxy evolution dark matter and dark

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energy

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next up to bat was installing another

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new instrument the cosmic origin

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spectrograph

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this would be the most sensitive

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spectrograph ever flown on hubble

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allowing us to peer even further into

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the ultraviolet spectrum

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but the punches hubble through weren't

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finished yet

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both the advanced camera for surveys acs

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and the space telescope imaging

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spectrograph stiz needed to be repaired

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following recent failures but these

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instruments weren't designed to be

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repaired in space

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astronauts had to open up both

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instruments and perform surgery to fix

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them

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the acs repair went well but when it

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came time to operate on stis hubble

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threw another hurdle in the way

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before astronauts could repair stis they

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needed to remove a handrail

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but a screw on that handrail got

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stripped

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after some quick thinking by engineers

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on the ground astronaut mike massimino

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was able to use brute force to pull the

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an unconventional yet effective method

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of getting the job done and the stis

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repair was a success

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not only that the astronauts of

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servicing mission 4 replaced gyroscopes

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batteries a failed computer installed

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new thermal blankets and a soft capture

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mechanism to allow for a future robotic

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spacecraft to dock with hubble and send

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it to its final resting place when its

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servicing mission 4 made hubble better

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and it wouldn't be without the crews of

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people in space and on the ground that

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allowed for that dream to become a

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and because of those people to this day

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hubble continues to expand our knowledge

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and wonder about the universe

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the hubble space telescope a piece of

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engineering and astronomical majesty

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once again released to uncover the