S8 Ep603: 16. Guest Bob Zimmerman explores archival space data on Uranus’s moons and the upcoming Apophis asteroid mission. He highlights the "Mothra" telescope in Chile as a prime example of private enterprise funding successful scientific exploration projects.,
The John Batchelor Show
John Batchelor
4.5 • 2.8K Ratings
🗓️ 19 March 2026
⏱️ 6 minutes
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Summary
16. Guest Bob Zimmerman explores archival space data on Uranus’s moons and the upcoming Apophis asteroid mission. He highlights the "Mothra" telescope in Chile as a prime example of private enterprise funding successful scientific exploration projects.,, (17)
Transcript
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| 0:00.0 | I'm John Batcher. Bob Zimmerman is here, and after space engineering comes space exploration, Bob is proposing that we're going to Miranda and Ariel. |
| 0:25.4 | What are those, Bob? |
| 0:26.6 | All right. |
| 0:27.0 | Well, actually, it's not just Miranda and Ariel. |
| 0:30.5 | Last week, I posted a really, really cool image of the smallest of the five classically known moons of uranus this was miranda it's the |
| 0:42.9 | smallest it's the innermost it's got a uranus has a lot more moons than these five but these are |
| 0:48.6 | the ones that were known before the space age and this image was really strange this is a strange |
| 0:53.8 | object um and I did this because |
| 0:56.7 | I've been delving through the archives of the various early missions because we haven't looked at |
| 1:01.6 | these in a long time. Voyager 2 went past Uranus 40 years ago. And at the time, it was really, |
| 1:08.8 | really exciting. We were getting the first look at these, |
| 1:11.7 | the planet and the moons. Hadn't seen these before. So the data was really interesting. And I thought |
| 1:17.0 | we should look at it again. But in looking at it again, I realized, you know, we really don't know |
| 1:21.8 | much about these planets. For example, Miranda, we only saw one hemisphere. The other was in darkness. |
| 1:27.3 | And Voyager 2 was gone before it came out into daylight. So we saw one hemisphere, the other was in darkness, and Voyager 2 was gone |
| 1:28.3 | before it came out into daylight. |
| 1:30.1 | So we don't know what the other half of Miranda looks like. |
| 1:32.9 | And there really aren't a lot of images. |
| 1:35.4 | And so he decided I'm going to do a tour for the next week of all these inner moons on what |
| 1:39.7 | Voyager 2 saw. |
| 1:41.5 | And so I also showed early this week in this tour area, which is the next |
| 1:46.7 | moon out of the classic moons. And it's a very cracked, fractured surface. Looks very different |
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