Conscious Choice cover

From the press release: In this ground-breaking new history of early America, historian Robert Zimmerman not only exposes the lie behind The New York Times 1619 Project that falsely claims slavery is central to the history of the United States, he also provides profound lessons about the nature of human societies, lessons important for Americans today as well as for all future settlers on Mars and elsewhere in space.

 
Conscious Choice: The origins of slavery in America and why it matters today and for our future in outer space, is a riveting page-turning story that documents how slavery slowly became pervasive in the southern British colonies of North America, colonies founded by a people and culture that not only did not allow slavery but in every way were hostile to the practice.  
Conscious Choice does more however. In telling the tragic history of the Virginia colony and the rise of slavery there, Zimmerman lays out the proper path for creating healthy societies in places like the Moon and Mars.

 

“Zimmerman’s ground-breaking history provides every future generation the basic framework for establishing new societies on other worlds. We would be wise to heed what he says.” —Robert Zubrin, founder of founder of the Mars Society.

 

Available everywhere for $3.99 (before discount) at Amazon, Barnes & Noble, and all ebook vendors, or direct from the ebook publisher, ebookit. And if you buy it from ebookit you don't support the big tech companies and I get a bigger cut much sooner.


The rings of Saturn

The rings of Saturn

Cool image time! The picture on right, cropped by me to show here, was taken by Cassini on April 2, 2016. You can see the moons Dione (on left) and Epimetheus (on right) above the rings. The full image can be seen here.

I am sure there is a lot of important science contained within this image. I post it here however not because of any scientific reason but entirely because it is simply damn spectacular. More than a decade after Cassini arrived at Saturn, every new picture of the planet’s giant ring system still seems incredibly unbelievable.

The universe is an amazing place, isn’t it?

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5 comments

  • wayne

    Ab-so-lutely, an amazing place!

  • Frank

    I was thinking this morning, before seeing this image, how much we have learned about our solar system and its origin in my 67 year lifetime.

    When I was a pup, long before the internet, I went to the library to get the most accurate information on planetary science. We also had a the multi-volume Encyclopedia Britannica in our home and I recall it had a single fuzzy ground based telescope image of Saturn. The encyclopedia spoke of Saturn having four rings, but my older brother had written in the margin “Three rings not four!”

    How far we have come in our knowledge thanks to the skills of the engineers, scientists, managers that created Cassini and the three spacecraft that preceded it. Well done!

  • We are accustomed now to this magnificent display of intricate, multiple narrow rings, rather than the disks originally supposed. But when the complex structure was discovered by the first fly-by, everyone was amazed. At least, everyone except Arthur Clarke who described the numerous bands in his novel “2001” (which had its space travelers going to Saturn, not Jupiter). I think he actually compared it to the groves of a phonograph record. The novel was many years before the fly-by. How did Clarke know!

  • Frank

    Shout-out to Bob Z. for mentioning our comments above on the John Bachelor Show tonight. The universe is an amazing place!

  • Edward

    Bernie Hutchins wrote:
    “But when the complex structure was discovered by the first fly-by, everyone was amazed. At least, everyone except Arthur Clarke who described the numerous bands in his novel “2001” … The novel was many years before the fly-by. How did Clarke know!”

    Clark liked to write with scientific accuracy, so he likely did some research. I will speculate that he may have discovered James Clerk Maxwell:
    https://en.wikipedia.org/wiki/Rings_of_Saturn#Ring_theory.2C_observations_and_exploration
    “In 1859, James Clerk Maxwell demonstrated that the rings could not be solid or they would become unstable and break apart. He proposed that the rings must be composed of numerous small particles, all independently orbiting Saturn. … Maxwell’s proposal was proven to be correct in 1895 through spectroscopic studies of the rings carried out by James Keeler of Allegheny Observatory and Aristarkh Belopolsky of Pulkovo Observatory.”

    Arthur Clark knew at least a little about orbits, as he is the one who invented the geostationary communication satellite in a letter he wrote in 1945.
    http://lakdiva.org/clarke/1945ww/
    “An ‘artificial satellite’ at the correct distance from the earth would make one revolution every 24 hours; i.e., it would remain stationary above the same spot and would be within optical range of nearly half the earth’s surface. Three repeater stations, 120 degrees apart in the correct orbit could give television and microwave coverage to the entire planet.”

    Knowing a little about orbits — that objects in orbits closer to the planet orbit faster than those farther from it — may have helped Clark understand that solid rings around Saturn would be structurally unstable.

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