SUDDENLY THERE IS "WEIRDNESS" ABOUT THE MILKY WAY'S THEORIZED (AND UNDISCOVERED) DARK MATTER: 2/8: The Elephant in the Universe: Our Hundred-Year Search for Dark Matter by Govert Schilling (Author), Avi Loeb (Foreword)
The John Batchelor Show
John Batchelor
4.5 • 2.8K Ratings
🗓️ 4 February 2024
⏱️ 11 minutes
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Summary
https://www.msn.com/en-gb/money/technology/something-fishy-is-happening-with-the-milky-ways-dark-matter-halo/ar-BB1hs74y
https://www.amazon.com/Elephant-Universe-Hundred-Year-Search-Matter/dp/0674248996
In The Elephant in the Universe, Govert Schilling explores the fascinating history of the search for dark matter. Evidence for its existence comes from a wealth of astronomical observations. Theories and computer simulations of the evolution of the universe are also suggestive: they can be reconciled with astronomical measurements only if dark matter is a dominant component of nature. Physicists have devised huge, sensitive instruments to search for dark matter, which may be unlike anything else in the cosmos―some unknown elementary particle. Yet so far dark matter has escaped every experiment. Indeed, dark matter is so elusive that some scientists are beginning to suspect there might be something wrong with our theories about gravity or with the current paradigms of cosmology. Schilling interviews both believers and heretics and paints a colorful picture of the history and current status of dark matter research, with astronomers and physicists alike trying to make sense of theory and observation
2020 MILKY WAY
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| 0:00.0 | Like some kind of Pizza Ninja, Domino's are slicing their prices. |
| 0:05.0 | Domino's Price Slice. |
| 0:07.0 | Small pizzas now 8 quid, medium now 10 quid, and large now 12 quid. |
| 0:12.0 | Yet we're making cuts too. |
| 0:14.0 | In 11th of February 24, minimum delivery spend, charges and areas may apply. |
| 0:18.0 | Ties and see, see Domino's dot code. UK. Yeah. Kronikler who is taking us into the part of astronomy that is the most confounding |
| 0:36.8 | and tempting to to astronomers to cosmologists to people who read Goberts book. We're looking for something that we can't see, we've never found, |
| 0:46.8 | and we're going to try to imagine how we can certify it exists. We need theories is wonderful, but how do we certify it? Now we come to |
| 0:56.9 | Jeremiah Ostaker, who thanks to Goveret I've been led to his book, Heart of Darkness, published just a few years ago. He is an |
| 1:04.5 | astronomer with firm ideas, and one of those firm ideas is to picture again what |
| 1:11.3 | we can't see. It's called the halo effect around our galaxy the Milky |
| 1:15.8 | way around all galaxies what is that how should we picture it yeah it was a strange |
| 1:20.4 | situation because as we discussed before Fritz Vicky was the one who was the main one who realized there must be a lot of unseen matter in galaxies but no one paid too much attention back then and only in the 1960s in the late |
| 1:37.2 | 1960s there were those theories like Jerry Ostaker who started to calculate how a massive galaxy like our own Milky Way galaxy |
| 1:47.2 | could be stable because it's all these rotating stars and gas clouds in a flattened disk and when he did the calculations using the first generation of big computers back then he realized that a flattened disk of stars cannot stay stable. |
| 2:02.3 | It can only be stable when there is a big spherical |
| 2:05.4 | halo around it filled with some kind of matter. So he proposed that our Milky Way |
| 2:12.2 | and other galaxies also would be surrounded by a big |
| 2:17.3 | halo of unseen matter and it fitted very nicely in with his observations by Zweki and the first pioneering work by |
| 2:26.7 | young Orton Jacobus Captain that there must be unseen matter in the universe so now we |
| 2:32.0 | had a theoretical reason to believe it too because without |
| 2:36.0 | this big halo, this surrounding spherical cloud of dark matter, a galaxy could not even be stable. |
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