United in space: How we built the ISS

21 Dec 2025 · 50 min

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In short

Podcast Notes: The Documentary Podcast - "United in Space: How We Built the ISS"

Overview

  • Podcast Title: The Documentary Podcast
  • Episode Title: United in Space: How We Built the ISS
  • Host: Dr. Alice Bunn (Former International Director of the UK Space Agency)
  • Focus: The International Space Station (ISS) and its legacy of international collaboration in space exploration.

Episode Summary

Introduction

  • Celebrates 25 years of continuous human presence in space aboard the ISS.
  • Highlights the collaboration between nations, showcasing human ingenuity and resilience.

Key Themes

  1. International Collaboration
  2. The ISS serves as a symbol of global cooperation, with contributions from over 24 nations.
  3. Astronaut Peggy Whitson emphasizes that nationality becomes secondary in space missions; crew survival relies on mutual dependence.
  1. Historical Context
  2. The groundwork for the ISS began in the 1980s amid U.S.-Soviet tensions in the space race.
  3. The collapse of the Soviet Union in 1991 and subsequent financial struggles prompted a shift towards collaboration in space efforts.
  1. The Role of Near-Disaster
  2. A near-fatal incident aboard Russia's Mir space station catalyzed renewed commitments from nations towards the ISS project.
  3. The disaster revealed the necessity of teamwork and effective communication between international partners.
  1. Crisis Management
  2. A gripping narrative of how quick thinking and improvised solutions, such as using tape, were essential during emergencies.
  3. The episode recounts a critical moment when astronauts managed to avert disaster during a docking mishap.
  1. Future of Space Exploration
  2. The discussion transitions to the future of the ISS and the potential of private space stations.
  3. New opportunities in materials science and biomanufacturing in microgravity, including the production of stem cells and advanced materials, are explored.

Notable Anecdotes and Experiences

  • Experiences of Astronauts:
  • Michael Fole recalls his initial adjustments to the cramped, chaotic environment of Mir and how fixing critical systems helped him bond with Russian crew members.
  • Peggy Whitson shares her deep connection with international crew members over her long tenure aboard the ISS.
  • Cultural Connections:
  • A humorous story about the "bar" created for astronauts in Russia, where cultural bonds were strengthened through informal gatherings.

The ISS's Future

  • The ISS is scheduled for decommissioning in 2030 due to geopolitical tensions and technical challenges.
  • Axiom Space is working on commercial space stations, which could succeed the ISS and continue research and exploration.

Key Takeaways

  • The ISS exemplifies what humanity can achieve through collaboration despite geopolitical differences.
  • Important lessons learned from emergencies aboard the ISS emphasize the necessity of teamwork.
  • The future of space exploration is heading towards privatization and commercialization, promising innovative advancements in science.

Conclusion

  • The ISS stands as a testament to international cooperation in space exploration and science.
  • Future generations of space endeavors will build upon the foundation established by the ISS, expanding the possibilities for human achievement in space.

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Producer: Duncan Bulling Sound Design: Rowan Bishop Production Company: Two Degrees West for BBC World Service

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Transcript

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0:00This BBC podcast is supported by ads outside the UK.

0:30World Service. Listen now wherever you get your BBC podcasts.

1:00Listen on BBC.com or wherever you get your podcasts.

1:09It's a living, breathing organism that has protected my friends. Liftoff is set to occur 52 minutes, 47 seconds after the hour. It is the most expensive project ever completed by humans. We have ignition and lift off of the Soyuz rocket beginning the first expedition to the International Space Station. This is a spacecraft traveling at 17 ,500 miles an hour with 8 or 10 people living and working there 365 days a year. Soyuz heading toward a link up with the International Space Station two days from now. On November 2, 2000, history was made. I'm so proud of what the three of you have done and everyone here on the ground that has worked with you to bring us to this moment Two Russians and one American entered the International Space Station for a 136-day mission Let's look upon this as the real opening of the international space frontier not just for a country, but for Russia, America, Europe, Japan, Canada, and all that are to follow.

2:23The first residents of the ISS, they began a quarter of a century of unbroken human presence in space. You're listening to the documentary from the BBC World Service. I'm Dr Alice Bunn, President of the UK Space Trade Association, UK Space. And this is United in Space. With help from people who made the ISS a reality, I want to explore how a near-fatal disaster spurred nations to commit to the programme. Why a Moscow basement and Hollywood royalty sparked bonding between East and West. And how quick thinking and plastic tape saved the station. But first, I want to find out why the ISS has endured for a quarter of a century.

3:11And who better to ask than an astronaut known as the Queen of Space?

3:19I have spent a long time in space. I love it. I enjoy every minute of it because I appreciate the fact that this is such a short time in my life where I have this opportunity to be on the International Space Station or be in space, so I try and suck it all in and savour it all. Across three missions, Peggy Whitson racked up 665 days on the ISS, a record for a NASA astronaut. And for her, one thing stood out from her time on the station. International collaboration. My first flight, it was with two Russians. Later, I flew with Italians, French, Hungarian, Polish, Indian astronauts. I really feel that space is a place where nationality is not that important.

4:13We are there as a crew. We have to depend on each other for our lives in case of an emergency. And so it's very interesting to get to know about cultures and peoples. It just gives you a different perspective on who we are and where we come from. Peggy's experiences show why the ISS is far more than just a spacecraft. It is a unique 25-year partnership that's been home to nearly 300 people from 26 nations. A powerful symbol of what humanity is capable of when we all work together. But the station's history begins in the 1980s. when the superpowers were battling for space supremacy. Our progress in space, taking giant steps for all mankind, is a tribute to American teamwork and excellence.

5:06And we can be proud to say we are first, we are the best, and we are so because we're free. Tonight I am directing NASA to develop a permanently manned space station and to do it within a decade. In 1984, US President Reagan announced Space Station Freedom, a partnership with Japan, Canada and the European Space Agency. But with that programme still in the design phase, the Soviets unveiled a revolutionary space station. Now, yesterday, May put 1986 into the history books, the Soviets launched a huge new laboratory which will form the heart of the world's first permanently manned space station, Named Mir, the Russian word for peace, the craft has the capacity for six other space modules to dock onto it simultaneously.

5:57Mir's modular design was groundbreaking. A space station that could grow as new capsules were added and where crews could stay over a year in space. It seemed that the US and her partners were being left behind. But geopolitics was about to intervene. I'm standing on top of the Berlin Wall, which for years has been the most potent symbol of the division of Europe. In 1989, communism began to fall across Eastern Europe. And there can be few better illustrations of the changes which are sweeping across this continent than the party which is taking place here on top of it tonight. I want to be an astronaut.

6:39Two years later, the Soviet Union collapsed, plunging Russia and its space programme into economic freefall. And in the US, Space Station Freedom was also facing a funding crisis. At that point, NASA had spent$11 billion on trying to organize and execute the Freedom Program, but there was not a single pound of flight hardware that was ready to go. Former shuttle astronaut Bill Shep Shepard found himself at the center of the debate. Our Congress was on the verge of cancelling it, and so I got involved with what essentially was a last-ditch effort to convince Washington that NASA could execute a space station programme.

7:30Then out of the blue, NASA received a lifeline from an unlikely source, a fax from their cash-strapped Russian counterparts, suggesting they collaborate on a joint space station. The Russians had a very viable design for space stations, so they were very experienced in what you would call long-duration flight. They just had a lot of technique and equipment. We could do similar things, but I would say not as robustly as the things the Russians were using. But US politicians still needed convincing, so NASA suggested Shuttle Mir. Their astronauts would join the Russians on a series of four-month-long missions to Mir for a cost of nearly$500 million.

8:20It was kind of the wild times of Moscow. The shops just have very little produce. We couldn't get milk, and so we had a Russian cleaner. This lady would bring milk for our son Ian, who was one and a half, in a big bucket, and we'd boil it on the stove. British-American astronaut Michael Fole was one of those sent to Russia. My formal training was probably 80 % Russian language, and about 20 % was technical, because they didn't want to tell us much about how things worked. Someone asked the head of the Russian MIR program, what's Mike's function? He said, Michael is the useful weight. I thought, well, at least I'm going to be useful.

8:59Two, one, we have booster ignition and liftoff of this space shuttle Atlantis, maintaining America's constant presence in space. In May 1997, Michael began his four-month stay on Mir. As I float in, I'm thinking, oh, man, this is where I'm going to be staying. It smells a bit like a garage and a bit oily and then really, really cluttered, but orderly clutter because it's all been bungeed off to the sides of the tube that we're flowing through. It's a bit like going through an intestine, I would imagine. And I suddenly smell hot meat and potato food, better than space shuttle food. and heard this boombox beating disco music.

9:38And I thought, oh, not so bad. Michael was joining a crew who had already been in space for two months and he was keen to find a way to connect with them. There were a lot of things going on, but one of the things was the toilet was broken. I said, can I fix the toilet? It meant changing out all of the urine tubes. Kind of a messy business, but it's important because we recycled the urine into water that we would then turn into oxygen and etc. They let me at it after getting permission from Moscow. Moscow was a bit dubious, but that really, I think, helped me bond with them because I had done the dirty job.

10:12And as a result, when bad things happened, I ended up being well integrated into that crew. And they would answer my questions when I asked how things worked if I insisted that I wasn't doing it for spying. Vasily, the commander, would sometimes float by me and go, Langley, which is where the CIA hit pay story go, Cambridge. Like, Cambridge were your spies, Vasili.

10:38Good afternoon and welcome to the Johnson Space Centre for today's press conference on this morning's activities aboard the Russian space station Mir. A few weeks into Michael's mission, NASA summoned journalists to their base in Houston. As you've probably heard, there has been an event that occurred on the Mir last night, our time, right around 4 a.m. Central Time or maybe slightly before. or the crew of Mir were fighting for their lives. The Russian managers decided they wanted to have Vasily and Sasha try and fly a cargo ship without using radar. Well, this was a terribly, badly thought-out experiment.

11:16When you bring a spaceship in, you're both travelling at about 17 ,000 miles per hour, and Vasily, not using the radar, not knowing how fast it was going, and not knowing how far away it was, was just looking out the window and at the TV screen to try and fly by remote control. So I went off to the back of the mirror, which is where it was meant to dock, looked out through a tiny window, and I said, I can't see it, I can't see it. Well, that told me something was wrong. At that moment, there was a big kathump. I saw the walls of the station move around me. At that moment, I did think I was going to die because I thought it was going to rip the station open.

11:56And then I felt my ears popping. I thought, oh, it gripes that there's a hole in the station. We are going to asphyxiate it at a certain point. We had to stop the leak, and Sasha and I disconnected all these power cables so that we could put the hatch in place to stop the air going into space. The consequence was that we cut off all the power, and the batteries ran down as we went into darkness. And at that point, the station goes dead. With no electricity, the stabilising gyroscopes stopped working and the station began to spin uncontrollably. Now the solar panels couldn't collect power from the sun and recharge the batteries.

12:38But there was a Soyuz escape module attached to Mia. And Michael remembered a tale about a series of small rockets on the spacecraft called thrusters. I had heard a story that you could use the Soyuz thrusters thrusters to stop the spinning of the station. Vasili initially rejected that idea, but I started to discuss with Sasha, the flight engineer, how one could go about using the Soyuz to try and stop the tumbling. And I'm asking these questions, how much fuel will we use? Oh, you don't need to know. I said, well, how much of what we need to go home could we use? And eventually we persuaded Vasili to go and try it.

13:16We got it basically in a slow spin that allowed the solar rays to point to the sun. And about two days later, Russian ground controllers in Moscow were able to fire thrusters through the computer to stop the whole spin entirely. But during that time frame, of course, it hit the news. Of course, it was a big deal. Jim Bergamo, KTRK TV, ABC in Houston. In your mind, are the problems becoming serious enough and frequent enough to where you are concerned that maybe this is an unsafe vehicle. The other question, the bigger question, of course, is what does all this mean for a future cooperation on the International Space Station?

13:57Russia was very embarrassed by it. And the questions in the US Congress were, let's just stop, let's just stop. You know, this is too dangerous to continue. With the future of the Joint Space Station hanging in the balance, it was up to the head of NASA, Dan Golden, to convince the politicians. I can't begin to overemphasise what we have learned. We believe we are going to have a much safer space station as a result of the experiences we have on Mir. On the 29th of January 1998, the US, Russia, Canada, Japan and 11 members of the European Space Agency agreed to build a station with a similar modular design to Mir.

14:41Their deal set out NASA as the leader of the project's development, with Russia the second in command, and placed Bill Shep Shepard at the centre of a political storm. Because the Americans were taking the lead on the bulk of the hardware that was flying in space, one of the stipulations was that the Americans would provide the commander, and that was going to be me. And so this was really interesting because here I was getting ready to fly in space with two highly experienced cosmonauts, Sergei Krikalev and Yuri Gizhenko, both of whom had spent many, many months in space. My total flight experience was less than three weeks.

15:24And so the Russians were not super happy that some American new guy was going to be in charge. The Kremlin did win one concession. As most of the station's systems and modules were derived from Mir, the majority of training would happen in Moscow and in Russian. To help integrate the crew, NASA sent 26-year-old instructor Ginger Kerik to the Russian training base in Star City. I grew up in a household where I wasn't allowed to cross the street. I had to be in bed before the sun set. So when I flew down there for my first trip, it was a little intimidating. I remember seeing guards by the Coca-Cola machine, armed guards, and I thought, oh my gosh, where have I landed?

16:13So I get there and I'm meeting with my very first instructor, and they could not have been more welcoming, more charming. They were great. Despite the warm welcome, it soon became clear there was a problem. The Americans were finding it difficult to bond with the Russians. They would be very reluctant to maybe invite you over to their apartment for dinner. And I think it's because they, for the most part, knew what Americans had when we were back in the U.S. And they didn't want to basically showcase how little they had. And they were ashamed. And we thought, you know what? There's a basement in the cottages where our astronauts were living.

16:54And we thought, that would be a good place. That would be a great place. I had always wanted to have kind of like a bar where we can just, it doesn't matter, you can let your hair down. There was a bar somewhere in Houston that was closing. So we went over there and, oh man, they had a lot of stuff that they were just going to give away. So we put all this stuff on the plate, a pool table, a piano, a couch. And we got all of that to Star City and then we set up the bar. Just hours before the grand opening, Ginger received a mysterious message. The NASA office phone rings. And it's a person on the end of the line who is a personal assistant of a very famous actor.

17:41He would like a tour of the training facility. He's a huge space fan. And I'm like, shut up, this is, who is this? And then the individual pulls up in the car, walks out of the car, walks to me and introduce himself, and I was surprised to see Tom Hanks. And I said, hey, today's the grand opening of the bar, and I made a cake and everything. And so I explained to him what we've done, and he says, oh my gosh, yeah, I'd love to stay for the grand opening of the bar. He's sitting on the top of the bar. I don't think he was able to have alcohol, and so he's drinking orange juice. So I came in and the bar was full of people and there was Tom Hanks.

18:28We had a great party and he signed the bar and took pictures with everybody and it was just, I couldn't have planned that. And you can't make this stuff up. It was awesome. It was such a good day. Shep's hunch proved right. The bar became a hit with a whole Expedition One team, regardless of nationality. But it really turned into a good thing because the Russians would meet at the bar, you know, for a little debrief and a few libations. They would do that at the drop of a hat. And this became a really functional venue for smoothing out any of the issues that we might have. It became a fixture.

19:14Even today, the bar is still in operation in Star City. Main engine start, six engines up and running. On November 20th, 1998, the station's first module, Zarya, blasted into space. Liftoff of the Proton Rocket and the Zarya Control Module, the International Space Station, is underway. Two weeks later, the American Unity Module docked to Zarya. Further missions added technical hardware, food, water and the crew's living quarters. And on October 31, 2000, the station was ready to receive its first residence. Good morning, everybody. This is Mission Control Kolyov. Welcome to NASA's live coverage of the launch of the first expedition crew to the International Space Station.

20:03We were basically underneath a low cloud. The shuttle never would have flown that day because we want to have optical tracking of the shuttle, so if we can't see it, we can't launch. But the Russians said, hey, no big deal. This is not something we worry about. We're good to go here. Here are the crew members walking out of basically the crew quarters. Bill Shepard, the commander of Expedition One, along with Yuri Gidzenko and Sergei Krikalov. For launch day, you have to board a bus. But before you board the bus, there's some rituals that have to occur. Also the traditional blessing before the crew members head over to the suit-up room.

20:45This man in full priest garb comes out and he takes this thing and dips it in water and starts blessing him. But he's spraying water all over the place, all over everyone. And people are like diving and it was just hilarious. And it's getting up the crew members nose and just what is happening. And so once the crew members got blessed, then they could go downstairs and get in the bus. I didn't have children, but I thought, I wonder if this is what moms feel like on the first day of school when their kids go to the bus. Because it was just, oh my God, it's really happening. They're in the bus. And now the crew members heading out for the trip to the launch pad.

21:35Known as Site 254. It's actually the very launch pad that has been used for every crewed launch from Baikonur, including that of the first human to be sent into space, Yuri Gagarin, almost 40 years ago. You're in the middle of a crowd of 400 people right at the base of the rocket. Now, this is a fully fueled, ready-to-go machine. You know, it's about a million and a half pounds of stuff that wants to go boom. And you've got 400 people right at the base of it, yelling and screaming and drinking, and some of them are even smoking. I mean, if you had to do this in Florida with a space shuttle, you wouldn't find more than five humans within three miles of that thing just because it's so dangerous.

22:20But here you are. We're 400 of your best friends right at the base of the rocket. That was pretty surprising. I'm in the launch viewing area. And now I got there just before the crew gets out of the bus and they start walking up those steps. and as soon as they got up those steps, they pose and they take that final picture. And then the camera feed cut off. And I don't know why, but then I start hyperventilating because I can't see them anymore. And I don't know what happened to me, but I couldn't breathe. And there was a Russian general. He starts partying the crowd because it was pretty thick.

23:03And he's like, It's the mother of the crew. It's the mother of the crew. He plops me in front of this TV that's even closer to the launch than I was before. And he's like, see, you know, in Russian. Everything's OK. Everything's OK. And so I'm like, OK. But I felt like the biggest dork on the planet. T-minus 30 seconds. Now 30 seconds away from the launch of the first expedition crew to the International Space Station. It got to be 10.30 in the morning. The time was right. They punched the button. Away we went. Lift off of the Soyuz rocket, beginning the first expedition to the International Space Station and setting the stage for permanent human presence in space.

23:55You're listening to the documentary from the BBC World Service.

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25:39I'm Dr. Alice Bunn, and this is United in Space, an exploration of the life and times of the International Space Station. On October the 31st, 2000, Expedition One, containing two Russians and an American, launched to the ISS. Liftoff of the Soyuz rocket, beginning the first expedition to the International Space Station and setting the stage for permanent human presence in space. Called Expedition One, they began 25 uninterrupted years of humans living in orbit. We have initial contact, initial contact of the Soyuz capsule with the Expedition One crew to the International Space Station. Contact occurring exactly...

26:20Two days later, on November 2nd, 2000, Expedition One entered the International Space Station. And the head of NASA, Dan Golden, was on hand to congratulate Bill Shep Shepard. Shep, I want to say to you and your crew that this is an unbelievable experience. You were involved from the very beginning of the redesign, and it's just so emotional to me. I'm so proud of what the three of you have done and everyone here on the ground that has worked with you to bring us to this moment. Let's look upon this as the real opening of the international space frontier, not just for a country, but for Russia, America, Europe, Japan, Canada, and all that is to follow.

27:14It was a buzz. There were people everywhere and cameras everywhere. where we celebrated for the first 30 minutes of them being in there. And then now I'm like, OK, we've got to get this installed and that installed and that installed. So I go back to my console and just wait to see if I can help. Once the crew had set up the essential support systems, spacecraft began delivering more components of the growing station. Vast solar panels provided a much-needed energy boost. and in the Destiny Laboratory, Shep and his crew began experiments. The lab is a little over 30 feet, hatch to hatch, and it's full of bays for racks.

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27:57We have six areas here. We're going to put experiment racks in. They investigated one of the ISS's fundamental aims, developing technologies crucial for future missions to Mars and beyond. Then, after 136 historic days, Expedition 1's time on the station came to a close. And Shep handed over the ISS to Expedition 2 and its first Russian commander, Yuri Yusachev. We pass to your care Alpha's log with the hope that many successful entries here are recorded, that explorations are prodigious and discoveries wondrous. May the goodwill, spirit, and sense of mission we have enjoyed on board endure. Sail her well.

28:48I am ready to be relieved. And I relieve you.

28:58There was one thing that I wanted when we were all said and done. I wanted to land and to be able to walk away from what we had done, you know, saying that we had played our role in helping to construct this vehicle in orbit. And, you know, we did our job making this a reality. bearing in mind that eight years before we had many many people that said nasa and the space station program it was not going to be capable of getting this done over the next months more modules and hardware were added to the station with its large cargo bay and ability to carry up to seven crew the space shuttle proved crucial but just as the space station was truly taking shape, tragedy struck.

29:53In February 2003, astronaut Scott Parazinski was acting as the crew family escort on a mission of Space Shuttle Columbia. I remember taking the families to mission control during their shuttle flight and the elation that the crew had and how excited they were with how perfectly the mission seemed to be going, and we all expected them to come back to Earth, to us. GNC flight, everything looked good to you? Control's been stable through the roles that we've done so far, flight. We have good trims. I don't see anything out of the ordinary. Ginger Kerrick was working in the ISS Mission Control as the station's CAPCOM, the person who liaises between the crew and flight director.

30:43So for landing day, it was just a regular work day for us, and we were pretty busy. And I'd had all of the shuttle communication loops up and was trying to listen to both my space station and the shuttle. FYI, I've just lost four separate temperature transducers on the left side of the vehicle. And I could hear the CAPCOM on the shuttle flight control room calling the crew. Columbia, Houston, comm check.

31:14And no response. Calling the crew and no response. Columbia, Houston, UHF comm check. On the launch, a large piece of foam from our orange external tank separated, and it hit the left leading edge of the space shuttle, causing a pretty large breach. And so as the shuttle reentered the Earth's atmosphere, going through this heating of reentry, there's a breach through the left wing that led to a catastrophic failure in the entire ship, and the crew was lost. Fido, do you have any tracking? No, sir. GC, flight. Flight GC. Lock the doors. Copy. Just as I'm starting to learn what happened, our crew member calls down.

32:02And he says, hey, Jen, according to my watch, the shuttle should have landed by now. You know, how did it go? How is everybody? And I look at the flight director and she's like, shakes her head. Do not answer. So I just took a deep breath and I said, give me just a second and I'll check in with them and I'll get right back to you. OK, OK. That afforded us time to privatize the comm loop, because if I had answered, Then, everybody that knows how to tune into the live Space to Grounds would hear my crew member's reaction, and I wanted to protect his privacy. So then we privatized, and I called up, and I said, hey, there's not going to be a landing today.

32:53There's been a horrible accident. We're devastated. But our thoughts and our prayers go out to the families of Rick and Willie, David and Kalpana, Michael, Laurel, and Elan. These were my friends, but I was not allowed to have an emotionally-based response right now. I needed to be strong. So when we had a little calm gap, it was about five minutes long. I got up, I went to the restroom, I cried for three minutes. I timed myself and then I gave myself two minutes to get myself back together and went back into the control room and continued. It was one of the worst days that I had ever experienced working.

33:47It probably was the worst day. All shuttles were immediately grounded. halting the construction of the ISS and leaving NASA with no way of exchanging crews or sending supplies. Guess who stepped up? Our Russian counterparts. Whatever we needed, they came through. A vehicle to get our guys home and a plan to get that vehicle. Food, water, here, whatever you guys need. Can't ask for more than that. With the shuttle out of operation, all crew and supplies used the Russian Soyuz. But this meant stripping back missions. There was no further construction, crews were reduced to just two people, and all scientific experiments were suspended.

34:34Back on Earth, Scott Parazinsky was made part of the team investigating the Columbia disaster. And they came to a damning conclusion. What led to the Columbia accident really was what pilots call get-there-itis. There was a real urgency to finish the International Space Station program. They wanted to turn the space shuttle as quickly as possible. It led to ignoring issues that had happened in recent flights. So this wasn't the first flight that pieces of foam would come off of the space shuttle. Because of that, certain engineers and mission control concluded that it wasn't anything to worry about, but they were absolutely wrong.

35:16With some questioning if the ISS would ever be completed, NASA carried out meticulous safety checks on the shuttle. Three and a half years after the accident, they finally cleared the spacecraft to restart building the ISS. Even then, it was far from a straightforward task. In October 2007, one of the first missions returned to the ISS. T-minus 16 seconds, sound suppression water system has been activated. It was essentially the final major assembly mission of the International Space Station from the U.S.'s perspective. So we were going to be delivering the Harmony interconnecting module. One, booster ignition and liftoff of Discovery, hoisting Harmony to the heavens and opening new gateways for international science.

36:06With its multiple docking ports, Harmony would allow the Japanese and European space agencies to attach their modules and complete the ISS. As an added degree of difficulty, we'd be moving a large solar array truss from the top of the space station. It was called the P-6 or Port-6 truss. It had its solar panels retracted, and we would be unbolting it, and we'd then install it out at the very tip of the space station. Discovery, seven miles downrange at an altitude of two statute miles. Flying at 600 miles per hour. Discovery's engines are... On the mission we had just installed the P-6 solar array truss out at the very tip of the space station.

36:48We were just elated that all of the most difficult tasks, or so we thought, had been completed. But as we floated inside the laboratory module of the ISS, everyone was hunkered around a small little CCTV monitor, and they were trying to zoom in to see the solar panel that we had just installed. In ISS mission control, Ginger Kerrick had been promoted to flight director. I am just walking around. I'm thinking about what I'm going to have for lunch. And I'm watching the television screen as this thing is unfurling. And it maybe gets two-thirds of the way out, and you start to see it rip. It could rip apart.

37:33It could damage the space shuttle or the space station. We could have another Space Shuttle Columbia situation on our hands. So what ensued was 72 hours of brilliant work in Mission Control Houston This young man runs in and he is carrying this plastic rope that is wrapped in white tape that has two plastic ends. And it looks oddly like a very large, poorly manufactured cufflink. So he shows me this diagram and he says, if we can install these cufflinks in these specific areas, we can restore the structural integrity of the array and then we can continue to deploy it. So I'm like, you're planning on fixing my multibillion dollar spacecraft with cufflinks made out of plastic and tape?

38:25Yes. Then they looked at the inventory that was aboard the International Space Station. It was sort of an Apollo 13 moment, really, when you think about it. And they found that they had some 12-gauge wire. They had some aluminum shim stock. They had special insulating tape. Within a matter of a few short hours, they came up with this really cool plan to build five cufflinks. Okay. How exactly do you propose to get our crew members up there to install them? And he's like, well, we can stack the robotic arms together. We have one crew member who should just be able to reach, should just be able to reach, is what he said.

39:11And I'm like, too tall? And he's like, yeah, too tall. So we used to nickname Scott Parazynski too tall because he was too tall to fit in the Soyuz. So I'm at the end of this nearly 30 meter boom with my spacesuit boots in a foot restraint. But it does take a little bit of concentration because if the movement of the robotic arm is a little abrupt, it could actually spit you out. And that would be a really bad thing, especially if you're in close proximity to the solar panels. And I was worried about electrical arcing because his suit was metal and they had to tape parts of his suit with Kapton tape.

39:48I was like, are you mummifying my crew member with Kapton? Yes, we are. And it's just like, what? He had to have thought we were absolutely insane. It was the best day on the job ever for me. I had a 45-minute one-way commute to work. I had this incredible God's eye view of the shuttle as well as the space station and our beautiful planet below. I had a tool in my hand that I called the hockey stick that would allow me to keep the solar panel from floating in contact with my spacesuit. And so at that point, I decided, well, hang on a second. I can use it to very delicately pull the solar panel towards me a little bit.

40:25and I think I can probably try and get the first cufflink in. Very soon it became clear that this was actually going to work. I remember calling it down, and I could hear people in Mission Control cheering. It was one of those moments of elation that all of us felt. He did it, and it worked, and they're still holding it together today. Today. This was in 2007. I always tell people the story, and I say, resist the urge to turn down the crazy, because I really just wanted to send that young man out of my meeting like you are absolutely nuts. But I didn't. With the solar arrays working and Harmony connected, the European and Japanese space agencies could attach their modules, creating the configuration of the ISS that exists to this day.

41:14Landing gear down and locked. With construction of the space station now complete, the shuttle was finally retired. Having fired the imagination of a generation, a ship like no other, its place in history secured, the space shuttle pulls into port for the last time, its voyage at an end.

41:41But the incident that Scott had encountered does reveal an ongoing threat to the ISS. I was able to bring the piece of frayed guide wire that had caused the problem back to a laboratory, and they were able to detect tungsten and other signatures that made it very clear that this was a piece of space debris that had clipped this guide wire just perfectly. And that was just enough to cause parts of the solar panel as they unfurled to catch and generated a rip in a couple of places on the solar panel. Our species' exploration of space has left millions of pieces of debris orbiting our planet. This space junk ranges from defunct satellites and spent rocket boosters to minuscule flecks of paint and dust.

42:30Travelling at nearly 18 ,000 miles per hour, even the smallest can inflict massive damage on any craft circling our planet, including the ISS. Radar systems do track the larger pieces of space debris, and if there's an anticipated conjunction, that's the terminology that's used, the space station will actually perform essentially an evasive manoeuvre, so they'll move out of the way the best that they can. Small steering thrusters on one of the Russian modules have been crucial to the station surviving for 25 years in the unforgiving environment of space, allowing the international partners to understand how the human body reacts to weightlessness and the engineering that could power exploration deeper into the cosmos.

43:15Two minus ten, nine, eight, seven, six... But since 2020, there's been a big change on the ISS. Two, one, and lift off Falcon 9. Go Axiom. Private companies have begun flying crews to and from the space station. Together we expand what is possible in low Earth orbit. Ad Astra and Godspeed AX2. One of these is Axiom Space. And one of their missions included a very familiar face. And we have our first views of the Axiom crew members floating aboard. First is Commander Peggy Whitson at the helm. These astronauts are in good hands. Five years after retiring from NASA, Peggy Whitson, the Queen of Space, returned to the space station.

44:04When I left NASA, I just made the assumption That'll be it. And I knew there were companies out there that were trying to go into space, but I never had any idea that five years later I would be commanding a commercial spaceflight to the ISS. It's been somewhat overwhelming, and Frank told me I couldn't cry. But I'm like, if I say anything that means anything to me, it's going to happen. And it was just incredible to me that in such a short period of time, I was flying in space again. We felt at home while we were here. Thank you, and I will be back. Peggy's return wasn't motivated by personal glory, but a desire to build upon the discoveries made on the ISS.

44:53Government entities can't make money, so ISS is limited on some of the things that they can do on board their station. Part of the thing that drew me to Axiom Space was the idea that that we were going to take so much of this really cool research that I had been a part of on ISS and take it to the next level, to do manufacturing, actually making products. That was a big draw to me. The idea of making products in space might seem very alien. But orbiting 400 kilometres above Earth, the ISS has an extraordinary advantage. It experiences virtually no gravity. Convection, buoyancy, how our molecules and how our atoms interact is all impacted by gravity.

45:42Now, when you go up into space, the gravitational force of the Earth is reduced, and so that takes gravity out of the equation. So fundamental physical forces can be completely changed. As Chief Scientific Officer at Axiom Space, Lucy Lowe's job is to identify products that will benefit from being made in zero gravity. The crystalline structure, how the atoms actually align themselves in space, we call it more perfect. They form better alignments, they have fewer defects. And what that means in terms of their application is that then they have increased yield, they have better efficiency. So if you're talking about a fibre optic cable, you're actually talking about the increase in the efficiency of conduction of the signal through that cable.

46:27Faster fibre optics would revolutionise communications. while making atomically perfect semiconductors in space could lead to faster, more powerful computers. The station also offers the ideal environment to grow stem cells, which could be used to treat heart disease, diabetes or neurological conditions like strokes. And some believe we could even grow entire human organs in space and use them for transplants. On Earth, if you layer up a bunch of cells, they're just going to glob down into a blob. and sink to the bottom and collapse under their own weight. Whereas when you're in space, that doesn't happen.

47:05So you can create larger tissue constructs that could then be used as a bridge to organ transplantation. There's a lot of work that needs to be done on the ground to understand how we incorporate different kinds of immune cells, different kinds of vascular cells that we can have blood flowing through those tissues. But there's a lot of really exciting and promising work going on that could lead to that path eventually in microgravity. The possibilities for humanity are enormous, but there is a problem. The International Space Station has already entered its final chapter. The Russian flag now flies above the Crimean Parliament here in Sinferopol.

47:43Since 2014, Russian aggression has led to a souring of relations. President Putin has announced a major military operation against Ukraine. The first explosions were heard here in Kiev shortly after five in the morning. The governments of other partner nations have placed Russia under economic sanctions, causing the Russians to threaten to crash the ISS or to pull out of the station altogether. Then there are mechanical problems, like persistent air leaks and areas weakened by metal fatigue. For these reasons, the ISS is scheduled to be decommissioned in 2030 and crashed into the middle of the Pacific Ocean.

48:26And with the present fractured state of geopolitics, it seems unlikely that governments will come together to fund a new international space station. But Axiom Space may have an alternative.

48:41With flight hardware in Turin, Italy, flight systems in Houston, Texas, and operational confidence in low Earth orbit, the next era of human spaceflight has already begun.

48:55Axiom plans to launch the world's first commercial space station by 2028. And their first module will head towards a very familiar object. We'll send up our first module to dock to the International Space Station. It enables us to pull across stuff from the ISS that no one wants to lose. There's a lot of equipment that has a long life left that could be useful for ongoing research and continuous operations. Saving the ISS's lab instruments will continue the space station's scientific legacy. But this docking will be short-lived. The Axiom module will have to uncouple before 2030, when the ISS is de-orbited.

49:37Once that detaches from the ISS, we'll be adding more modules to the Axiom station. So we'll have an airlock, we'll have another crew habitation module. As we build out the station, we can make sure that we're incorporating the most up-to-date tech. We can make sure that we're adjusting to what the market needs are. So if we see that there's a huge upswell in interest for countries to have crew up in orbit, we can add additional habitation modules as needed. If we see that one of the areas of manufacturing, biomanufacturing for stem cells, takes off really quickly, we can add an entire module that is dedicated to stem cell manufacturing.

50:13So we're able to adapt as we go along based on what the market is essentially going to drive. Humanity is standing on the cusp of a new space revolution, which could propel our species to new possibilities and technologies, thanks to countries uniting to create the International Space Station. Liftoff of the Soyuz rocket, beginning the first expedition to the International Space Station. It's a living, breathing organism. is something that the Expedition 1 crew breathed life into. Crew now reporting 30 meters, 0.2 meters per second closing rate. And it blossomed into this wonderful symbol of what humanity can accomplish when we work together.

51:04That's what it is to me. All going very smoothly with this final approach to docking. standing by for contact. Our species will benefit from the ISS's legacy for years to come, as a new generation of space stations, both commercial and state-run, carries on the work begun by the ISS. We definitely feel like we're going to be standing on the shoulders of giants. We have initial contact of the Soyuz capsule with the Expedition 1 crew to the International Space Station. The ISS has been a pinnacle of human achievement, and it is really a testament to humans working together and doing really difficult things.

51:47I'd like to give a big thanks to all the people on the ground, and Russia, the United States, and all the partner countries that have worked long and hard to make this possible. It's a great moment for all of us. United in Space was presented by Dr Alice Bunn. The producer was Duncan Bulling. Sound design by Rowan Bishop It was a Two Degrees West production for BBC World Service

52:17The Interview The best conversations from across the BBC Today we are spending trivians on war and peanuts on peace With the people shaping our world You're making decisions that will have long-term consequences for the levels of greenhouse gases in the atmosphere Wind power in the United States has been subsidized for 33 years. Solar for 25 years. That's enough. The interview from the BBC World Service. Listen now wherever you get your BBC podcasts.

From the publisher

Celebrating 25 unbroken years of humans living in space, former international director of the UK Space Agency Dr Alice Bunn charts how nations put aside differences to create the ultimate symbol of human ingenuity and collaboration – a space station orbiting our planet that has been home to more than 300 people from 24 different nations.

Using mission control audio, news archive and personal stories, Alice illuminates acts of epic survival, humour and selflessness that made the station a reality. She investigates why a near fatal disaster on the Russian Mir space station spurred nations to commit to the ISS, and reveals how a Moscow basement and Hollywood royalty sparked bonding between Russians and Americans. She also discovers how quick thinking and plastic tape saved the station, allowing it to grow to the size of a football pitch, and how one astronaut came within seconds of drowning in space.

Looking into the future, Alice explores how the legacy of the ISS will be carried on by a new generation of private space stations, which have the power to push back the boundaries of science for the good of all humanity. The reduced gravity offers enormous possibilities, including creating materials impossible to create on Earth.

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