So One Of The Things I Didn't Know About Being An Astronaut Was All Of The Different Kinds Of Skills

Mission Control is a unique environment.  The people who work there are the cream of the crop.  The tops in their graduating classes, the high performers in industry.  And so working in Mission control, my favorite thing is that I get to work with such uniquely talented people, and of all ages.  So it's a place where we can all come together, everybody with their own skill set, and solve the day's problems.

What was your favorite thing about working in Mission Control? (Also, you are the best

Yeah, so the human body changes a lot when you're in space. There's things that happen like fluid shifts, since you don't have gravity drawing the fluid down into your legs, all that fluid shifts upwards.  And the body can adjust to this, it does this by just getting rid of the excess fluid.  When you come back to Earth, however, you're a little bit dehydrated.  So one of the things we do is get fluid in right away.  

Another thing that's concerning is things like bone loss aor muscle loss, so what we do to prevent most of that on board is actually just work out a lot.  We have a device called ARED, which is a Resistive Exercise Device, and we have a whole gym's worth of weight-lifting exercises.  We do that, we do running, and we do cycling.  And that can counteract most of the muscle loss and the bone loss we see on board.  We're really successful in returning astronauts in pretty good health these days.

Is your health affected from being in outer space?

"So I got started working on black holes my first year in graduate school.  I actually tried another research project first about cosmology, but frankly the math was just too difficult for me, so I decided to go into easier things: black holes."

I love astrophysics and especially black holes and I want to pursue a career on them, but to be honest I'm scared to be not good enough or not clever enough. How did you decide to work on black holes? How did you become the person you are today?

When you first get into the capsule sitting on top of the rocket, it actually feels incredibly familiar.  It looks like the simulator that we've trained in for years and years, and so you sit down and you strap in, and it feels like you're just gonna go for another three hour sim.  And it might be really boring, and then there might be a fire, and then all of a sudden as you're thinking about those things the rocket starts to lift off and you realize it's not a simulation.  

So there's a lot of g-forces, the rockets shake, and the whole time you're thinking, "this is the most amazing experience I've ever had."  And really, the whole thing culminates at the end of it, after that nine-minute ride when you look out the window and you see the planet.  

We never get to see that in the simulator.

How does it feel to into space for the first time? Like liftoff and leaving earth’s atmosphere? It seems like the world’s terrifying roller coaster, but what’s it really like?

Working at NASA has been an extraordinary experience and I have a lot of memories I can tell you are my favorite.  But there's one in particular that stands out above the rest.  

I was a new flight director, only been in the office for two years, and we were executing the STS-120 mission, where we were taking these solar arrays that are in blankets, and you put them up on board the space station and you unfold them like an accordion.  

As we were unfolding one of them, we saw it rip.  And by the time that the power discipline expert could make the array stop, we had a huge tear inside the solar array.  After several meetings, it became clear that we were not going to be able to undock the shuttle in that configuration and we had to figure out a way to fix the solar array.

At that time I was working at what we called a team four.  So three teams used to support the shuttle mission, but we always had a fourth team waiting in the background for something to go wrong.  So at that point we called together a meeting and a young engineer showed up who was about 24/25 years old.  And [he] said "Flight!  I have a solution!"

So he walks into my meeting with this. [holds up object] And I said, "what is that?"  

And he says, "It's a cufflink, Flight, and I made it out of spare parts that are available to the astronauts on the space station. And if you take this and you weave it through some of the holes and you pull it tight, we'll be able to secure the solar array."

And so sure enough, we were able to take this cufflink and a couple more like it, and put one of our tallest crew members on board a stacked set of robotic arms and he installed a cufflink.  And that cufflink is there today and keeps the space station solar array structurally sound.  So best moment ever.  You never know what a 24/25 year old can accomplish.

What has been the best memory you have so far at NASA?

"So a black hole is just pure gravity.  In technical terms, that means that Einstein taught us that gravity is energy.  Energy is mass (E = mc2) .

Mass creates more gravity, so you get this essentially runaway effect where gravity is causing energy is causing mass is causing more gravity.

And it just pulls itself in on itself more and more and more, and you get this runaway called a singularity surrounded by an event horizon, which is the black hole."

uhmm, can you tell me what exactly a black hole is? or what iy does? thanks, just really confused and curious on how it actually works.

"Short answer: No.  Long answer: Definitely no."

Science fiction sometimes makes it seem like it’s possible to live in a black hole. What is the truth behind this?

Yeah, flying's great.  It's a completely different sensation.  You know, you can compare parts of it to things like riding a bicycle, skateboarding, surfing, things like that - even skydiving.  It's a real feeling of freedom when you're actually controlling *makes wing gestures* the aircraft flying through the air - a little bit like a bird. 

And that's an amazing privilege to have, and it's really a nice opportunity to get up there and maneuver in three dimensions - really four dimensions if you consider speed - through the earth's atmosphere.  I absolutely love it.

How does flying feel?

We train a lot for space walks, so hundreds of hours underwater in the pool, and we spend a lot of time going over every detail of the space walk.  But one of the things you really can't train for is the feeling you're in an absolute vacuum.  So we do a few tests in the vacuum chamber, but when you first go outside the hatch and you see the total darkness or the brightness of the Earth, and you realize that there's no air molecules anywhere else around you - that's the biggest surprise.  

And then I think the second surprise is after an hour or two, getting comfortable working in an absolute vacuum, knowing that the suits are going to protect and you have a whole team of people on the ground taking care of every aspect of that spacewalk.  I think that was the thing that was the most surprising, was how alone and distant from the planet you can feel, yet totally supported by all the people working down in Mission Control.

I’m sure you’re trained so that nothing in space is really a surprise, but: was there anything about spacewalking that surprised you when you did it for the first time?

On a daily basis?  That's a good question, because when you think of people that might be dressed in flight suits and things or have the duty title of a pilot, that's not all we do.  

Most of our time is actually spent working, coordinating with teams, whether it's scientists with different objectives, learning what they want to do so that we know how to translate that into where we need to put the airplane, to put their instruments in the right place to measure what they want to look at.  Or with engineers, when we're redesigning or modifying aircraft so they can perform the way we want.

That combination there is really pretty amazing.

What do you do on a daily basis?