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.

As expected, Pluto’s atmosphere is freezing as its orbit takes it from the Sun

Data from ground-based telescopes has now confirmed that Pluto’s nitrogen atmosphere has begun it annual winter freeze out as the planet’s somewhat elliptical 248-year-long orbit takes it away from the Sun.

For about 25 years, Pluto has been moving farther and farther away from the sun, so its surface temperature has been going down. And with these recent observations, the researchers found evidence showing that Pluto’s atmosphere is actually refreezing back onto its surface as the dwarf planet gets colder and colder. Pluto is so far from the sun that, as time goes on, it will get distinctly farther away (and colder) before getting closer to the sun in other regions of its immense orbit.

The astronomers were able to detect this refreezing by observing the planet as it eclipsed a star in 2018.


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  • Call Me Ishmael

    “… observing the planet as it was eclipsed by a star …”


    Actually, that was the other way around.

  • Call me Ishamel: Yup, you are right. Post corrected.

  • Lee Stevenson

    I wonder what (very slow!) Chemistry is going on out there? All sorts of chemicals in strange states mixing in alien ways, and the possibility of an underground liquid water ocean…. The same thoughts occur to me regarding Titan… Although Titan has liquid on the surface.

    As Bob repeatedly says, these world’s are truly alien… We cannot even begin to understand the processes that occur on these world’s without much closer investigation. I just hope that some answers are revealed in our lifetimes!

  • Jeff Wright

    Titan has seas of high test. I want it.

  • “… observing the planet as it was eclipsed by a star …”

    Now that, would be worth seeing.

  • Andi

    Actually, Pluto gets eclipsed by a star approximately once a year! :)

    Not advisable to watch it directly though.

  • Dusk on Trenco.

    I always thought that was a cool idea. Very strange to know it actually happens, even if “annually” rather than “daily”.

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