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servicing just means the ability to be

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able to fix or repair something in space

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so similarly to if your car breaks here

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on earth or there's a problem with your

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air conditioner at home you know you can

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fix those things and it's pretty easy to

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do on the ground

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in space it's a little bit more

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challenging so you need to kind of

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design that ability into the hardware to

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allow astronauts to be able to fix

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things in space while they're wearing

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[Music]

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the hubble space telescope was specially

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designed to enable it to live longer

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engineers on the ground designed it with

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interfaces or pieces of hardware that

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could easily be accessed by an astronaut

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when hubble launched in 1990

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unfortunately scientists discovered that

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when they received the first images they

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looked blurry

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[Music]

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with some amazing smart people on the

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ground they realized that that primary

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mirror that collects all the light from

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the stars

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was slightly misshapen by just a teeny

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amount and that's what made all the

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the first hubble servicing mission sm-1

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of which one of the primary objectives

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was to fix that misshapen mirror by

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launching a dedicated separate

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scientific instrument that has uh what

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you might hear eyeglasses on it or

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special lenses

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that could correct for this misshapen

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mirror and then sharpen up all the

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scientific images to make them look the

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way they're supposed to look

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[Music]

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hubble was unique in that the failures

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that we met with towards the end of the

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servicing missions forced us to design

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tools that had never been designed

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before so we ended up repairing parts of

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the telescope that were not planned on

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the analogy given is doing heart surgery

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in space

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with tiny tools tethers and techniques

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that were never initially designed to be

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used

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we learned a lot about how to do harder

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things you know harder things than

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there are lots of types of missions

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including hubble space telescope the

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international space station

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there'll be future you know lunar

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missions and martian missions

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so they're using some of the tools and

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techniques that were developed by some

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of our hubble engineers and then

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similarly a lot of those lessons learned

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will be applied to future lunar space

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walks and martian space walks because

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we're going to need to be doing more

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specific probably more hand intensive