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The conclusion we've come to from
that is that there is a significant

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spherical aberration
appears to be present in the optics.

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...and that we should be able to fix it
in our insurance program.

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We were very worried about how the mission would be perceived

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if we were not able to accomplish
all of the objectives of the mission.

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Just disappointment, like everybody else.

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We are all looking forward to the images
from the telescope.

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I wasn't an official part of the mission
control team for the deploy,

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but I got to go down and sit next to Story Musgrave while he was CapComing

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as they were working an issue
during deploy, just in case

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he needed an extra set of hands
to bring him coffee or something.

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We were all waiting for
the images to come back because we all

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are curious about our universe

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and we were disappointed when they were not perfect.

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Some people asked me earlier today,
“what is spherical aberration?”

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The simplest way of understanding it
is that when you have a mirror,

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this focusing, the light
all comes together at a single point

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as the objective of the exercise.

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You want the light come together
and focus at a single point.

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When you have spherical aberration,

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it says that there are some disfigurement
of that mirror that causes the light.

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Instead of focusing at a single point
to be spread across a region in space,

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and that a spherical aberration.

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When I found out I was on the mission,
it was really a surprise

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and really exciting, and mainly

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because it was going to be so different
than the mission I had right before it,

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and I was going to get to learn
a lot of new things

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and fly with some good folks.

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So I was excited.

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The number one goal
on the first Hubble Space

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Telescope servicing mission
was to correct the error in the mirror.

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There was a lot of training
and there were a lot of review teams.

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Those are the two things that I remember.

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The training was really, really enjoyable
and we would train

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for the ascent and entry parts

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of the mission, for the orbit
part of the mission and simulators,

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and then there were a lot of water
tank runs

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where we would go over there with
the folks who were doing the spacewalks.

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They would be the ones in the water
and the rest of us would be outside

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watching, running the robot arm in the water tank.

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But sometimes we’d get to put on scuba gear and get down up close and watch

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what they were working with.
And that was really fun, too.

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My key task was
to be the, basically the copilot,

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we call it the pilot, because you don't
want to be the copilot on a space shuttle.

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You've got the commander and the pilot.

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During the launch rendezvous, the grapple,

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and the berthing of the telescope,
and then the release and fly away.

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And then the entry.

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The way we felt the public pressure
was in all the review teams.

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We had lots of folks
looking over our shoulder,

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trying to make sure
that we were thinking of everything

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that we needed to think about before
we did the mission.

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But for the crew, I think our biggest worry was

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less about being successful

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and being able to correct the problem,
the vision problem with the telescope,

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and it was more about making sure
we didn't make the situation worse.

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The crew on the first servicing
mission was completely engaged

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and devoted to making that mission
a success.

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Everybody had a job.

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We tried not to do other people's jobs,
but we were always there to help,

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somebody who needed help.
Somebody stepped in.

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If somebody had something they needed,

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somebody else would figure out
how to help them with it.

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There's a lot of feelings.

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You get up in space,
a lot of really good feelings

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when you see the Earth, when you see
a beautiful instrument like the telescope.

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But I think every astronaut's
greatest fear is making a mistake.

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And probably the best thing you can possibly hear is when 

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the ground comes up and says, “Hey,

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you did that right!

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You went through post-insertion

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and there weren't any mistakes,
or, Yeah, that didn't work out

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like we expected it to, but
we really think you did the right thing.”

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So thanks.

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When the corrected images came out,

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that's when I was able to breathe
a sigh of relief and say it really worked.

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And I think a lot of the other folks on
the team were that way, too.

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I was like, okay, this really did work.

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Folks will pay a lot of attention
to what we did.

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But if you look at the engineering
challenge, all the intricate details

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of the instruments
that were required to gather the data

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that was presented,
it's really impressive.

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The work that was done was 100 times
harder than our servicing mission.

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And so I think all of us were a little bit
relieved when we saw those pictures.

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Every mission tries
to take as much as it can

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from the missions that went before it.

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The Hubble servicing mission,
the first Hubble servicing mission tried

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to take as much as it could from other
spacewalk missions

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or EVA missions of the past,

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whether they were for assembly or repairs.

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And then a lot of it was developed new

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for the Hubble Space
Telescope repair mission.

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But then a lot of the knowledge
that was developed there

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transferred directly to construction
of the International Space Station.

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It'll transfer to things
that we do at Gateway someday.

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It'll apply to things that we do

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on the Moon and deep space
going to Mars and beyond.

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It all links,
but there are a lot of procedures

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and processes that were developed

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during Hubble missions, or started during
Hubble missions that have been refined

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and you can see the roots when you look at ops on the International

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Space Station today.

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I am proud of our

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team for what we did,
but I'm proud of the country

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for being willing
to invest in something like that,

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that's pure science, that's
trying to learn about what's around us,

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and our international partners
that were also part of the mission, right?

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I mean, it's something
that's good about humanity,

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that we can put our efforts
on something positive that increases

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our knowledge of our surroundings.

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I think perspective is good.

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I think we've seen
that things are bigger than us.

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And you look at a Hubble image
and you realize

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that the universe is bigger than us,
and that perspective

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helps you realize that,
you know, all humans are important.

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Everybody that you talk to is important and that

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none of us deserve to be treated
differently than anyone else.

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So I just want

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to say I'm proud to be from a country
that supports efforts like this.

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I think space exploration reflects
the continuing pioneering

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spirit of the American people, and I think
it's something we can all be proud of.