Meditating and Not

I just noticed that I can elect to pay attention to my breathing, or ignore it, but one or the other keeps happening. Changing which one I focus on changes the way I think. This is interesting.

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Thoughts on Colonizing Space

OSIRIS_Mars_true_color

[Image found here.]

It is no secret than I am not a fan of our current president, Donald Trump. I’ve been watching him carefully, and have found exactly one point of agreement with the man: humans should colonize the planet Mars. The two of us differ, however, on the details. What follows is my set of reasons — not Trump’s — for supporting colonization of Mars.

First, we should not start with Mars. We should start, instead, by establishing a colony on Luna, our own planet’s moon. There are several reasons for this. First, as seen in this iconic 1969 photograph brought to us by NASA, we’ve been to the Moon before; it simply makes sense to start space-colonization efforts there.

apollo-flag2

At its furthest distance, the Moon is ~405,000 km away from Earth’s center, according to NASA. By contrast, at its closest approach to Earth in recent history, Mars was 55,758,006 km away from Earth. With the Moon less than 1% as far away as Mars at closest approach, Luna is the first logical place for an extraterrestrial colony. It need not be a large colony, but should at least be the size of a small town on Earth — say, 100 people or so. There are almost certainly problems we haven’t even discovered — yet — about establishing a sustainable reduced-gravity environment for human habitation; we already know about some of them, such as muscular atrophy and weakening of bones. Creating a lunar colony would demand of us that we solve these problems, before the much more challenging task of establishing a martian colony. (To find out more about such health hazards, this is a good place to start.) Once we have a few dozen people living on the Moon, we could then begin working in earnest on a martian colony, with better chances for success because of what we learned while colonizing the Moon. 

An excellent reason to spend the billions of dollars it would take to colonize Mars (after the Moon) is that it is one of the best investment opportunities of the 21st Century. Space exploration has a fantastic record of sparking the development of new technologies that can help people anywhere. For example, the personal computers we take for granted today would not be nearly as advanced as they are without the enormous amount of computer research which was part of the “space race” of the 1960s. The same thing can be said for your cell phone, and numerous other inventions and discoveries. Even without a major space-colonization effort underway, we already enjoy numerous health benefits as a result of the limited exploration of space we have already undertaken. Space exploration has an excellent track record for paying off, big, in the long run.

Another reason for us to colonize Mars (after the Moon, of course) is geopolitical. The most amazing thing about the 20th Century’s Cold War is that anyone survived it. Had the United States and the Soviet Union simply decided to “nuke it out,” no one would be alive to read this, nor would I be alive to write it. We (on both sides) survived only because the USA and the USSR found alternatives to direct warfare: proxy wars (such as the one in Vietnam), chess tournaments, the Olympics, and the space race. In today’s world, we need safe ways to work out our international disagreements, just as we did then. International competition to colonize space — a new, international “space race” — would be the perfect solution to many of today’s geopolitical problems, particular if it morphs, over the years, into the sort of international cooperation which gave us the International Space Station.

Finally, there is the best reason to establish space colonies, and that is to increase the longevity of our species, as well as other forms of life on Earth. Right now, all our “eggs” are in one “basket,” at the bottom of Earth’s gravity well, which is the deepest one in the solar system, of all bodies with a visible solid surface to stand on. A 10-kilometer-wide asteroid ended the age of the dinosaurs 65 million years ago, and there will be more asteroid impacts in the future — we just don’t know when. We do know, however, that past and present human activity is causing significant environmental damage here, so we may not even need the “help” of an asteroid to wipe ourselves out. The point is, the Earth has problems. The Moon also has problems, as does the planet Mars — the two places are far from being paradises — but if people, along with our crops and animals, are located on Earth, the Moon, and Mars, we have “insurance” against a global disaster, in the form of interplanetary diversification. This would allow us to potentially repopulate the Earth, after the smoke clears, if Earth did suffer something like a major asteroid impact.

Since Moon landings ended in the 1970s, we’ve made many significant discoveries with space probes and telescopes. It’s time to start following them with manned missions, once again, that go far beyond low-Earth orbit. There’s a whole universe out there; the Moon and Mars could be our first “baby steps” to becoming a true spacefaring species.

[Later edit: Please see the first comment, below, for more material of interest added by one of my readers.]

Posted in Geography, History, Life, Mysteries, Politics, Science and Scientists | Tagged , , , , , , , , , | 3 Comments

On Taxation, and Representation, in Public Education

The last few years have been rough for education in central Arkansas. The Pulaski County Special School District (PCSSD) suffered for years under state control, but local control has now been restored there. The neighboring Little Rock School District (LRSD) was more recently taken over by our state’s Department of Education, and is still in that unpleasant, and unhelpful, state.

When the state government takes over a school district, the people’s representatives (the local school board) are simply dismissed, and the Commissioner of our Department of Education functions as a one-man, unelected “school board.” It’s a situation which robs taxpayers (also known as voters) of any voice in how their schools are run. It doesn’t help instruction at all, which I know because I’ve observed it myself, as a teacher. In my opinion, all laws allowing state takeovers of school districts, nationwide, should be repealed. 

During this tumultuous period, there have been three elections about school millages: two in the PCSSD, and one in the LRSD. In the PCSSD, one vote (which failed) happened with that district still under state control. The second in the PCSSD happened yesterday, and this time, the measure passed by a 2-1 margin. What’s the key difference? Simple: when faced with a “taxation without representation” situation, the voters said no. Once local control was restored, the voters said yes.

In the neighboring LRSD, only one millage-related election has taken place recently, and it happened under state control, just like the first of the recent two in the PCSSD. In the LRSD, with their right to representation still denied to them, this ballot measure failed.

The lesson to be learned here is simple: to get support from voters, local control of public school districts must be maintained. We’re Americans; “no taxation without representation” was one of the primary reasons we fought for independence in the first place. Nationwide, it’s part of our story, as a people. Taxation without representation does not work here — specifically because it is un-American. That should be the lesson learned from these three elections.

The PCSSD is free from state control, and things are now improving there. Hopefully, the LRSD will enjoy the same benefit — soon — along with other school districts in the same situation, in our state, and nationwide.

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A Rhombic Dodecahedron, Made of Icosahedra, and Tall Triangular Antiprisms

Augmented Icosa

Software used: Stella 4d, available at http://www.software3d.com/Stella.php.

 

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Honeycomb Made of Cuboctahedra and Octahedra

Augmented Cubocta.gif

This is the three-dimensional version of what is called a tessellation in two dimensions. It fills space, and can be continued in all directions.

Software used: Stella 4d, available here.

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Spectral Circles on a Cuboctahedron

Cubocta

I used three programs to make this: Geometer’s Sketchpad, MS-Paint, and Stella 4d. The third of these may be tried for free at http://www.software3d.com/Stella.php.

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Spectral Circles on a Truncated Icosahedron

Trunc Icosa

I used MS-Paint and Geometer’s Sketchpad to make the designs on the faces, and then used Stella 4d (here) to put the whole thing together.

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