Science Friday - Getting the billion-dollar PRIMA space telescope off the ground

Episode Date: October 20, 2026

In late September 2026, NASA announced that a new telescope called PRIMA was getting a green light and advancing to something called Phase B of the development process. But what does that mean exactly? How does a billion-dollar space project get thought up, designed, approved, and constructed?Flora talks with Jason Glenn, an astronomer who led the initial concept study for PRIMA, about the challenges ahead and the process of getting a massive space project off the ground.Guest:Dr. Jason Glenn led the concept study for the PRIMA space telescope, and is now a professor of astronomy at the University of Virginia.Transcripts for each episode are available within 1-3 days at sciencefriday.com. Subscribe to this podcast. Follow our show on Instagram, TikTok, Facebook, and Bluesky @scifri and sign up for our newsletters. Got a science question that’s keeping you up at night? Call us: 877-472-4374 Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Hey, it's Flora and you're listening to Science Friday. Late last month, NASA announced that a new telescope called Prima was getting a green light and advancing to the next stage of development, entering something called phase B of the development process. And we said, oh, that's awesome, but what does that mean exactly? How does a billion-dollar space project get thought up, designed, approved, and constructed? Joining me now is Dr. Jason Glenn. He led the concept study for Prima. Basically, it's his idea. And he's now a professor at the University of Virginia. Hey, Jason, welcome to Science Friday. Good morning. Okay, first off, you sold NASA on this idea. Congratulations. But sell us, in layman's terms, why is this telescope so cool? What is it answer that we can't answer now? There are a number of really interesting and pressing science questions in astrophysics that are driving the field forward currently, but we don't have the observational capability to address these yet. So we know that there are many planets around other stars in the Milky Way now.

NASA has confirmed over 6,000 planets around other stars, and we want to understand how they got there. And Prima enables us to do that, which no other observatory can do, by itself because it enables us to figure out the crucial role of water in the formation of planets. Another is understanding the abundance of the elements like carbon and oxygen in there, and we can do that. The other is that galaxies in the modern day universe all have supermassive black holes in their centers. It begs the question, how did they get there? That mystery has stood for 25 years, and we can make unique observations with this observatory that will let us answer that question. And it all comes down to the super sensitive detector technology that

we've developed for the observatory. What does Prima specifically bring to the table that we don't have? What Prima brings to the table is brand new observational capability in the far-infrared part of the electromagnetic spectrum. And the technology in this part of the spectrum has lagged other areas because its only application is really in astrophysics. So it's, it's a lot of It's been up to our community to develop it. So we've kind of lagged behind other areas where there were commercial interests in the technologies. And that's why it took persistent decades of investment. Well, I wanted to ask about that because when you're pitching a project like this, are you planning for what you could possibly do in 10 years? Or do you have to have all the sort of technology in hand? That's a very good question. Really, you want a balance. You want to be. just on the edge because you want to take maximum advantage of the new technology that you're

developing or that's coming along. So you definitely have to have the technology mature by the time you get to go ahead to build the observatory. But you can be in the latter stages of the development and maturation of it when you propose if you are confident and you can demonstrate that you're going to get to the end point in time. So you can't, it's not blue sky. It's not like, oh, no. If we could travel through time, this is what we should do. And I think we could get there. It's like, we're on the cusp of having this working. And we're going to rely on that technology. But we're pretty sure we can get it done. That's absolutely correct. There are a lot of taxpayer dollars that go into an endeavor like this. And so we need to be sure that we can do it. Okay. So you just got through phase A. Congratulations. Thank you. How many teams were you competing against? And is it quite competitive? Like, just take us inside.

behind the curtain. Oh, it's competitive. So the idea for a probe, an astrophysics probe, was first floated in 2016. And initial concept study proposals, I think there were 38 submitted. Then, after the decadal survey of astrophysics, which was commissioned by the National Academies of science to inform Congress, recommended that NASA, to create a probe class mission. Probes were a new class because they were very large in ambition compared to the explorers that existed before.

So this is a bit of an experiment for NASA. Is it like somewhere in between a James Webb and something smaller? Yes, that's exactly right. So NASA put out a call for proposals and there were eight proposals that were submitted in step one. And then NASA downselected,

unselected to two. We were one of those two, and we emerged as the top contender and were selected for the next phase. Was there a moment when you found out where you're like sitting on the phone with bated breath? Continuous, nonstop. And I have to say, I've been working on this for 10 years. And in the past, there were, no matter what, I could always focus my energy. on doing just a little bit better, getting us closer to that selection for implementation. But the last couple of months has been excruciating where I had to wait, and I couldn't do anything. It was actually more difficult than the prior period when we were working so hard.

I mean, did you get a call in your office? Is there an envelope that arrives? How did you find out that you got past phase A? Yeah, you get an email from NASA headquarters. I'm a program scientist, and they say, be on this call at this time with the director of astrophysics and the science mission directorate. And then you show up, and that's when they tell you. And then the information is embargoed, and it's painful. So you have to sit on it all day. Nothing can come out before their press release. So you have to tight lip all day long. You wait for that. And then you

share it with the team at the end of the day. And there's a big celebration that goes on. Like champagne, what does it look like? Yeah, that's what it looks like. Exactly. So we're distributed. So there were corks popping all over the world. We got on a Zoom call together for that. How far are you from actually getting to go to the hardware store and buy the parts and start?

So that's a good question. So you asked about the phases earlier. So phase A is the concept design study phase. That's where you build the science case and then you put the skeleton in place of a design for an observatory and a plan of how you would build it and do it. Phase B, what we've just moved into now is a detailed design and the remains of the technology implementation, a technology maturation phase. Like blueprints, detailed blueprints, and then, yeah, okay, we got all this tech working. That's right. And you're accounting for the mass of every nut and bolt on that observatory. you have everything planned in extreme detail.

Then there's another key decision point at the end of phase B where NASA convenes a panel of experts and they assess, are they really ready? Can they do this? Are they going to stick to scale their own budget? And are they going to meet their science requirements? If you get through that, then you move into the implementation phase. And that's where you start what we say cutting metal.

I mean, you know, it's interesting, Jason. you're a scientist, right? But this seems like a massive sort of project management endeavor. Like it seems to go way beyond the science. Is that true? It's absolutely true. Yes, I'm a scientist, but I've also always been very excited about technology. And I started my studies in engineering. And it's enabled me to work in this intersection between astrophysics and technology development and engineering, which has been really rewarding and exciting. So I felt like I had a bit of an advantage going into this

because I could understand what was feasible and what wasn't. I also can speak the language that engineers speak and managers speak. Sometimes there's a cultural difference between them and scientists, which is important to overcome and feel all part of one group. this project management problem is enormous. And so, in fact, what we do is we bring on a project manager, and the project manager manages the day-to-day implementation of the observatory. You would not normally put that in the hands of a scientist.

Maybe on a small scale, but not on this scale. Not on a billion-dollar scale. You know, you've been using words, sort of very, words as you've been talking about this. It's excruciating. It's painful. It also seems like very high highs, you know, popping the champagne, right? What's the emotional journey of doing something like this? I've been reflecting on that. I put my soul into this project. There's no doubt about it. And I'm very excited that it's going to go forward. This is really the start. Really? even though it's been 10 years, we're not done.

We have to get through the next gate and into the implementation phase, and then we have to continue to produce all along. So I think I have a lot of optimism that we can do that because we have an extraordinary team and they're behind it. The community is deeply engaged in planning for Prima, and that has been one of our strengths. We've had a couple of science books in which the community submitted, papers describing what they wanted to do with Prima, it's totaled 200 papers and 400 authors.

That's a big chunk of the astrophysics community. And to tell you the truth, every time I think about that and engage with them, this stress that I'm feeling kind of goes away. And so this is a rare opportunity. It's very exciting. But it's also a lot of responsibility. Yeah, it does feel like a lot of responsibility. And it's been, you know, as we have covered on the show, a really tumultuous few years for science.

What's it been like for you trying to keep this project going? Well, you hit the nail on the head there. It has been hard. And I found that I found out what it is to be a leader and how that is different from the training we get in science. because we had major obstacles. We had the federal workforce shaken up. We had a long furlough. The jet propulsion laboratory had fires and ended up being shut down.

And each time one of these events occurs, it causes the international partners to have concern. And so you need to reassure them and understand what the problems are, have a plan to solve them. and keep everybody working towards the same goal. It has been as if I've been trying to balance this while standing on ground that is not stable. And so it's been a humongous challenge in that regard. Okay. I can't wait to talk to you in, you know, a couple years when this is launching because it's going to happen. But what are the biggest challenges that you're facing now, the ones that you still have to work through?

Well, it's funny that you ask that because we work so hard to get to this point. But the people who've been through it before warn everyone, you think it's crazy now. Just wait until you're selected. And you find out what the actual profile of your schedule is and the effort that's going to be involved. So I think our challenge will be persistence. and you were mistaken just a little bit, and they were not going to launch in a couple years. It's probably more like 2033 until we're ready. So we have to keep the fire burning all the way until that time.

Are you good with delayed gratification? Yes. Perseverance is my middle name. Really? Yes. I mean, I feel that way. I do. You can't repeat.

this, but I do endurance sports on the side, Ironman triathlon, ultramarathon, things like that. Wait, we have to include this, Jason, because this gives us a sense of who you are. This doesn't feel like something we can't repeat. Can we put it in? People will want to know how you get through a long, decades-long project. It makes sense you do endurance sports. Yes. Well, I have to, and everyone is different.

And that's what enables me to maintain equilibrium and perspective as I go through. but I also noticed that the, I tend to choose challenges of a substantial scope. There's a pattern here between the hobbies and the career. So, yeah, I'm good for the long haul. When will you feel like, okay, we are good? This thing is definitely going to fly. When it's going to fly? So I'm not going to exhale until the observatory has been long.

And it operates cold. So first it cools passively, then it has on board refrigerators. Everything has to get cold. And at the last step is when the really sensitive detectors get turned on at the end. And so that will be about three months after launch when we're doing the final checkout. When everything's working then, I'm going to exhale because the science operations start at that time. Okay, so 2033, 23 or 2034, sounds like when you can relax. So that's only, what are we looking at?

Seven years. Seven years? Yeah, it's okay. It's going to be fun along the way. And we're going to answer the questions that we asked, that we told NASA that we were going to do. However, the discovery space is so enormous that I can't predict what the most exciting discoveries are going to be. Well, good luck.

Thank you. Dr. Jason Glenn led the concept study for Prima, and he's now a professor of astronomy at the University of Virginia. This episode was produced by Charles Berkwist. Thank you for listening at Florida Lichtman.