Powdery Texture (Helps in Mining and Mineral Processing)
One of the benefits of dealing with lunar material is that it's powdery on the surface. Indeed, the astronauts compared it to ash. Look at how fine the imprints of their sunken footprints are.
The reason for this is the lack of any shielding atmosphere, which has allowed meteorites, micrometeorites and solar and cosmic radiation to bombard the surface over the eons, pulverizing it into powder. Typically, the thickness of the powder is 2 to 10 meters in the lowlands, and 100s to 1000s of meters (kilometers) in the highlands, the highlands consisting of piles of crater ejecta.
Since the surface of the Moon has been unchanged by any geologic activity for 3+ billion years, we see the accumulated effects of 3+ billion years of meteorite bombardment and pulverization.
As a NASA report summarizes: "The fragmented material consists of as much as 25% by weight under 20 micrometers in diameter [i.e., one fiftieth of a millimeter!], and more than 70% under 150 micrometers in size [i.e., one seventh of a millimeter]. Approximately 90% by weight of the lunar soil consists of particles under 1 millimeter in size." It's more powdery in some places than in others.
The material properties of lunar soil are discussed further in the section on mining.
PERMANENT.com > Lunar Resources (Mining The Moon) > Origin and Composition > Powdery Texture
PERMANENT needs a PHP / MySQL (actually, MariaDB) programmer. Are you a PHP / MySQL programmer interested in getting into space development as a career, or already working in space development? Or do you know somebody else who might be interested?
There is an ongoing process to update this website in 2019 with a target relaunch in 2020.
This website is actually very out of date. Much of the website text content was written in the 1980s to early 2000s, but that's a different matter. As regards PHP / MySQL, some offline databases go into the 2010s, as regards professional publications, engineers, companies, etc., and this is what we need programming help with. We are updating our databases on people, organizations, publications, and other things, for open source space development for all.
The current status is we have some working databases which we have been using internally for a long time for organizing professional publications, and to track people (authors, R&D people, other professionals, quality volunteers, journalists, etc.) and organizations. We want to put information online for the general public pending a security review of the programming code.
Step 1 is fixing some bugs in what we already have, the PHP code. It is functional, and been used a long time, but there are some bugs.
Step 2 will be improving the system. Some small improvements would help its usability.
Step 3 will be a security check for putting it online for the general public to be able to access and use, but with reasonable protection against hackers.
After Step 3, the main mission is accomplished, as regards PHP / MySQL, though of course we hope to keep people engaged and happy, and the sky's not the limit.
This is a volunteer, unpaid role at this point in time. A limited paid role would be considered on a tight budget, such as for at least bug fixing with some minor improvements, and/or a security review of our code before it goes online publicly. If you or one of your friends or associates may be interested, please send an email to spaceprogrammer at ... of course this domain.
Reasons to do something yourself:
- It will help save life on our special planet -- be part of the solution in your generation.
- It will create and secure a better future for your children and grandchildren.
- It could be an interesting, cool, and a fun adventure for your life!
You can join us and volunteer to help out,
... or ...
If you're short on time, you can just donate:
The Permanent Space Development Foundation, Inc., is a 501(c)(3) nonprofit organization.
If you would like to make a quick donation to our humanistic cause,
then please click on one of the buttons below (which go to PayPal).
... or by cryptocurrency (which is NOT tax deductible), you can donate into any of these wallets:
... or ...
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