S8 Ep750: Preview for Later Today Ken Croswell explores the discovery of rogue black holes traveling through the Milky Way. He discusses the catastrophic consequences for our solar system while noting that such an encounter is still extremely unlikely.
The John Batchelor Show
John Batchelor
4.5 • 2.8K Ratings
🗓️ 15 April 2026
⏱️ 3 minutes
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Summary
Ken Croswell explores the discovery of rogue black holes traveling through the Milky Way. He discusses the catastrophic consequences for our solar system while noting that such an encounter is still extremely unlikely.
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Transcript
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| 0:30.9 | This is John Batchel, a conversation with astronomer Ken Croswell about the discovery of a black hole that is on the move, on the loose, |
| 0:41.4 | across the galaxy, the Milky Way. A black hole is a collapsed star. There are rogue stars, |
| 0:49.3 | there are rogue planets. Well, apparently there are rogue black holes. And here Ken responds to my slight concern that a black hole might be headed our way. |
| 1:00.9 | And what would happen? |
| 1:02.1 | And could we escape it? |
| 1:03.2 | And has it happened before? |
| 1:05.2 | Ken Crosswell on the unlikely but not entirely impossible approach of a black hole to the solar system, |
| 1:13.6 | our solar system, anytime in the next X number of billion years. |
| 1:19.1 | Here's Ken. More tonight on runaway black holes. |
| 1:25.0 | Well, if they came sufficiently close to us, yes, a black hole would cause great disruption in the solar system. |
| 1:34.0 | The good news is the Milky Way is really big. |
| 1:38.0 | Yes, it's got lots and lots of stars, but there's so much space between the stars, including the black holes, that it's extremely |
| 1:48.0 | unlikely that something as relatively rare as a black hole is going to come close enough to us |
| 1:55.2 | to do us any great damage. Also, I do point out the fact that our solar system has been around for 4.6 billion years, |
| 2:04.2 | and we've never suffered a catastrophic encounter with a black hole, let alone just a normal star. |
| 2:12.1 | Because if we had, I assure you, the planets of our solar system would have been torn. |
| 2:18.3 | Basically, I mean, the orbits would go haywire. |
| 2:21.3 | Many of those planets in our solar system would have escaped from the sun, I bet. |
| 2:26.3 | I mean, if a black hole or just an ordinary star, imagine if it passed through so close that it came, I don't know, let's say between the orbits of Mars and Jupiter. |
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