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.


SpaceX plans Jan 8 launch

SpaceX today released its final investigation results on the September 1 Falcon 9 launchpad explosion, and announced that they have now scheduled their next launch for January 8 out of Vandenberg Air Force Base.

As expected, the cause is the accumulation of solid oxygen in the wrappings of the helium bottle tank (COPV) inside the oxygen tank of the first stage. The following is their announced solution:

The corrective actions address all credible causes and focus on changes which avoid the conditions that led to these credible causes. In the short term, this entails changing the COPV configuration to allow warmer temperature helium to be loaded, as well as returning helium loading operations to a prior flight proven configuration based on operations used in over 700 successful COPV loads. In the long term, SpaceX will implement design changes to the COPVs to prevent buckles altogether, which will allow for faster loading operations.​

Their vagueness in describing the “prior flight proven configuration” is likely to protect proprietary information, but the overall solution suggests that their fuel loading operations will take longer.

The January 8 launch date was simultaneously announced on twitter.

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One comment

  • Edward

    Since SpaceX has been chilling its LOX in order to increase its density and thus the amount contained in the Falcon 9, they tried to find a way to reduce the time for filling the tanks and doing so immediately prior to launch, thus reduce the temperature increase (and reduced density) while on the pad prior to launch. It seems that they will have to keep searching for a different process that allows for a similar outcome.

    For several months prior to this accident, they had been doing this type of O2 densification for their launches to geostationary transfer orbit in order to have the necessary propellant remaining in order to successfully land their first stage on their drone ship (barge) for later reuse. The first time I heard of them using this densification, they had been unable to keep the temperature low enough for long enough to launch, and they tried a couple of times.

    I am a bit surprised that friction from the composite wrap can create enough energy to be an ignition source, but then again, it is like rubbing two sticks in pure oxygen.

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