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.


Taking a look back at a Martian pit

Pavonis Mons pit
Click for full image.

The pit to the right could almost be considered the first “cool image” on Behind the Black. It was first posted on June 20, 2011. Though I had already posted a number of very interesting images, this appears to be the first that I specifically labeled as “cool.”

The image, taken by the high resolution camera on Mars Reconnaissance Orbiter (MRO), had been requested by a seventh grade Mars student team at Evergreen Middle School in Cottonwood, California, and shows a pit on the southeastern flank of the volcano Pavonis Mons, the middle volcano in Mars’ well-known chain of three giant volcanoes. A close look at the shadowed area with the exposure cranked up suggests that this pit does not open up into a more extensive lava tube.

What inspired me to repost this image today was the release of a new image from Mars Odyssey of this pit and the surrounding terrain, taken on July 31, 2019 and shown below to the right.

Wide image of pit on southeast flank of Pavonis Mons
Click for full image.

The white box indicates the area covered by the MRO image above. The top of the volcano is to the northwest, so that the slope heads downhill to the southeast.

The caption states that “the linear features [going from the northeast to the southwest] in the image are concentric faults.” Apparently, as Pavonis Mons rose it caused numerous concentric faults to form all around it, as shown by these features.

What is intriguing is the interplay between the lava flow depression going downhill at right angles to these concentric faults. That depression probably indicates the route taken by lava, either on the surface or in a lava tube below the depression itself. At one point that flow is redirected sideways for a short distance by one of those concentric faults, with most of the flow appearing to be pirated by that fault. When the remaining flow leaves that fault it continues downhill until it reaches another large lower fault, where it apparently gets entirely pirated to run within it to the southwest. The line of depressions within that lower fault suggests the existence of a lava tube, a supposition further reinforced by the pit.

What this wider image also suggests is that, even though the pit itself did not provide a direct skylight into a lava tube below, there are almost certainly underground voids of some kind here, running along that line of depressions. Mars’ lighter gravity and different composition would make these lava tubes different from Earth’s, but the superficial evidence does suggest they exist.

Readers!
 

I must unfortunately ask you for your financial support because I do not depend on ads and rely entirely on the generosity of readers to keep Behind the Black running. You can either make a one time donation for whatever amount you wish, or you sign up for a monthly subscription ranging from $2 to $15 through Paypal or $3 to $50 through Patreon.


Your support will allow me to continue covering science and culture as I have for the past twenty years, independent and free from any outside influence.


Your support is even more essential to me because I not only keep this site free from advertisements, I do not use the corrupt social media companies like Google, Twitter, and Facebook to promote my work. I depend wholly on the direct support of my readers.


You can provide that support to Behind The Black with a contribution via Patreon or PayPal. To use Patreon, go to my website there and pick one of five monthly subscription amounts, or by making a one-time donation. For PayPal click one of the following buttons:
 


 

Or with a subscription with regular donations from your Paypal or credit card account:


 

If Patreon or Paypal don't work for you, you can support Behind The Black directly by sending your donation by check, payable to Robert Zimmerman, to
 

Behind The Black
c/o Robert Zimmerman
P.O.Box 1262
Cortaro, AZ 85652
 

Or you can donate by using Zelle through your bank. You will need to give my name and email address (found at the bottom of the "About" page). The best part of this electronic option is that no fees will be deducted! What you donate will be what I receive.

3 comments

  • Ron

    I wonder where that seventh grade student is now, eight years later? Hopefully they are doing great things in space or are almost ready too. Very cool for kids that young to be able to request this image.

  • Terrence

    SHARAD is an instrument on the Mars Reconnaissance Orbiter. It is a ground radar instrument with a resolution of 15 meters (https://en.wikipedia.org/wiki/SHARAD). Has any tried to use its data to look for lava tubes around mars volcanoes?

  • Terrence: From what I understand, the bulk of SHARAD’s research so far has been to look for buried water/ice. I am unaware of anyone doing what you suggest. At the same time, the results from SHARAD have not been given a lot of press, so this unawareness could simply be my ignorance.

Readers: the rules for commenting!

 

No registration is required. I welcome all opinions, even those that strongly criticize my commentary.

 

However, name-calling and obscenities will not be tolerated. First time offenders who are new to the site will be warned. Second time offenders or first time offenders who have been here awhile will be suspended for a week. After that, I will ban you. Period.

 

Note also that first time commenters as well as any comment with more than one link will be placed in moderation for my approval. Be patient, I will get to it.

Leave a Reply

Your email address will not be published. Required fields are marked *