March 29, 2018 Zimmerman/Batchelor podcast
Embedded below the fold in two parts. The first segment was a detailed discussion of Soviet-style nature of China’s space program, while the second segment delved into dark matter and the uncertainty of science.
Readers!
Every February I run a fund-raising drive during my birthday month. This year I celebrate my 72nd birthday, and hope and plan to continue writing and posting on Behind the Black for as long as I am able.
I hope my readers will support this effort. As I did in my November fund-raising drive, I am offering autographed copies of my books for large donations. Donate $250 and you can have a choice of the hardback of either Genesis: the Story of Apollo 8 or Conscious Choice: The origins of slavery in America and why it matters today and for our future in outer space. Donate $200 and you can get an autographed paperback copy of either.
Please consider supporting my work here at Behind the Black. My analysis of space, politics, and culture, taken from the perspective of an historian, is almost always on the money and ahead of the game. For example, in 2020 I correctly predicted that the COVID panic was unnecessary, that the virus was apparently simply a variation of the flu, that masks were not simply pointless but if worn incorrectly were a health threat, that the lockdowns were a disaster and did nothing to stop the spread of COVID. Every one of those 2020 conclusions has turned out right.
Your help allows me to do this kind of intelligent analysis. I take no advertising or sponsors, so my reporting isn't influenced by donations by established space or drug companies. Instead, I rely entirely on donations and subscriptions from my readers, which gives me the freedom to write what I think, unencumbered by outside influences.
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Embedded below the fold in two parts. The first segment was a detailed discussion of Soviet-style nature of China’s space program, while the second segment delved into dark matter and the uncertainty of science.
Readers!
Every February I run a fund-raising drive during my birthday month. This year I celebrate my 72nd birthday, and hope and plan to continue writing and posting on Behind the Black for as long as I am able.
I hope my readers will support this effort. As I did in my November fund-raising drive, I am offering autographed copies of my books for large donations. Donate $250 and you can have a choice of the hardback of either Genesis: the Story of Apollo 8 or Conscious Choice: The origins of slavery in America and why it matters today and for our future in outer space. Donate $200 and you can get an autographed paperback copy of either.
Please consider supporting my work here at Behind the Black. My analysis of space, politics, and culture, taken from the perspective of an historian, is almost always on the money and ahead of the game. For example, in 2020 I correctly predicted that the COVID panic was unnecessary, that the virus was apparently simply a variation of the flu, that masks were not simply pointless but if worn incorrectly were a health threat, that the lockdowns were a disaster and did nothing to stop the spread of COVID. Every one of those 2020 conclusions has turned out right.
Your help allows me to do this kind of intelligent analysis. I take no advertising or sponsors, so my reporting isn't influenced by donations by established space or drug companies. Instead, I rely entirely on donations and subscriptions from my readers, which gives me the freedom to write what I think, unencumbered by outside influences.
You can support me either by giving a one-time contribution or a regular subscription. There are four ways of doing so:
1. Zelle: This is the only internet method that charges no fees. All you have to do is use the Zelle link at your internet bank and give my name and email address (zimmerman at nasw dot org). What you donate is what I get.
2. Patreon: Go to my website there and pick one of five monthly subscription amounts, or by making a one-time donation.
3. A Paypal Donation or subscription:
4. Donate by check, payable to Robert Zimmerman and mailed to
Behind The Black
c/o Robert Zimmerman
P.O.Box 1262
Cortaro, AZ 85652
You can also support me by buying one of my books, as noted in the boxes interspersed throughout the webpage or shown in the menu above.
The fact that dark mass is individual to each galaxy, as in this extreme case, actually speaks for dark matter as the explanation. Since it varies from galaxy to galaxy it rather has something to do with that object’s peculiar history in the lumpy world of hot dark matter. And that is just one out of millions studied, so there will be odd balls out there after a few billion years.
Astronomers have found the most bright things first, only now are they zooming in on dim galaxies. 90 years since Edwin Hubble discovered intergalactic space and the expansion of space (i.e. dark Energy with today’s glossary). Prepare for more and more dim stuff nearby to be discovered.
Except that the only proof of dark matter is as a fitting constant. Despite billions being spent, it stubbornly refuses to be found – except among the equations that keep galaxies from spinning apart.
@Brendan, Galactic rotation curves was the way “dunkle Materia” was discovered by Fritz Zwicky in the 1930s (who also foresaw neutron stars, also of utmost interest today, a very successful astronomer of the last century). Dark matter is seen on larger scales in galaxy clusters that have collided and thus separated ordinary matter from dark matter. And the large scale structure of galaxy cluster locations. And the missing mass is also somehow revealed in the temperature variations in the microwave background radiation, the image of the entire universe. So it is present in all cosmological scales.
It is not yet observed, I think, on sub-galaxy scales. But tiny galaxies, especially those streams from colliding dwarf galaxies that are surrounding the Milky Way, might be a step towards mapping dark matter more and more locally. I would think that Gaia’s extreme precision astrometry might be capable of revealing any dark matter interfering with the stars’ movements in our quarter or so of the Milky Way. But the expectation is that dark matter is too diffuse and widespread (“hot”) throughout the galactic halo for any local effects to be observed.
Developments in astronomy in the 20th century was about adding unexpected things not predicted by RT or QM or anyone’s imagination. Like big bang, inflation, intergalactic space, dark matter. And there’s room for more surprises. The more they look the more they find and the telescope evolution is awesome.