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The John Batchelor Show

PREVIEW: NASA Shifts Strategy for ISS Replacement, Embracing Commercial Space GUEST AND TITLE: Bob Zimmerman, space journalist SUMMARY: Bob Zimmerman explains NASA's plans to replace the International Space Station (ISS) by the end of the decade. Sean Duf

The John Batchelor Show

John Batchelor

Books, News, Society & Culture, Arts

4.52.8K Ratings

🗓️ 16 September 2025

⏱️ 3 minutes

🧾️ Download transcript

Summary

PREVIEW: NASA Shifts Strategy for ISS Replacement, Embracing Commercial Space

GUEST AND TITLE: Bob Zimmerman, space journalist

SUMMARY: Bob Zimmerman explains NASA's plans to replace the International Space Station (ISS) by the end of the decade. Sean Duffy, interim head of NASA under the Trump administration's vision, changed the previous Bidenadministration's strategy. Instead of a single large contract for continuous human occupation, NASA will now award smaller Space Act Agreements to multiple companies, like Vast, requiring them to invest their own money while ramping up to continuous occupation over time.

Transcript

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0:00.0

Building a coffee business?

0:01.9

Serving the best Americano in town is up to you. But winning back time and growing your business, leave that to sum-up. Take orders and payments anywhere with the new SumUp terminal. Turn occasional customers into regulars with a free loyalty program. And with the SumUp point-of-sale system, you'll always know when you're running low on your best-selling blends. Visit sumup.com.com. To learn more. is John Batchel, a conversation with colleague Bob Zimmerman about the plans to replace the

0:26.4

ISS with multiple possibilities. One is the NASA buildout of a space station and not depending on

0:36.6

just one company to build it. Bob here explains. Sean Duffy is the

0:40.3

temporary or perhaps permanent head of administrator of NASA now, and this is the Trump administration's

0:47.2

vision of the future using commercial space in all of its glory, as opposed to the Biden administration, which was much more

0:55.3

command economy. Here's Bob to explain what we know so far about the replacement of ISS.

1:03.5

Much more of this tonight.

1:06.1

All right. So this has to do with the space stations that, the American space stations that will

1:10.7

replace ISS, hopefully by the end of this decade when ISS So this has to do with the space stations that, the American space stations that will replace

1:11.2

ISS, hopefully by the end of this decade when ISS is hopefully retired, last that long.

1:17.6

VAST is one of those four companies consortiums that are competing to do this.

1:24.6

And the story here has to do with NASA and VAS's position on NASA. NASA recently announced

1:31.6

it is changing its strategy for replacing ISS. Previously, under the Biden administration,

1:37.2

the plan had been to reward a large space station contract to one, maybe, but not likely, of these competing companies, to build a major station and to do it with a goal of having immediate continuous human occupation so that we continue to have people in space at all times, even when ISS goes.

1:59.5

And the Trump administration changed that.

2:01.6

Sean Duffy, interim head of NASA, said, nope, we're not going to do that anymore.

2:04.6

We're not going to force these new consortiums to have continuous occupation right off the

2:09.6

back because they're not going to be prepared to do that.

2:11.6

It's going to be very difficult.

2:13.6

Let's get them up, ramp up to that over time which is a sensible approach

2:18.0

he also said we don't know if a single big contract

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