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Hollister David
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I love art and math. M. C. Escher and Albrecht Dürer are strong influences. I'm also interested in space exploration.
I love art and math. M. C. Escher and Albrecht Dürer are strong influences. I'm also interested in space exploration.

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Asteroid Day
On June 30 in 1908 the Tunguska object took out a good chunk of forest in Siberia. In February of 2016 the United Nations approved a resolution stating 30 June International Asteroid Day to observe each year at the international level the anniversary of the...
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Space Meow Boys
Sections of this long post: 1) Space Cadets 2) Space Meow Boys 3) Tom Murphy 4) James Nicoll 5) Charlie Stross 6) Opening A New Frontier Is Doable Space Cadets We are confined to a small, fragile planet. Being limited to a finite body of resources mean logi...
Space Meow Boys
Space Meow Boys
hopsblog-hop.blogspot.com
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Tahoe recreational math conference
I've been invited to talk at a recreational math conference at Lake Tahoe April 28. I will talk about the family of conics associated with a space elevator or a vertical orbital tether. The presentation combines stuff from a number of my earlier blog posts....
Tahoe recreational math conference
Tahoe recreational math conference
hopsblog-hop.blogspot.com
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We've made a new online store for books, T-shirts and other products. Mostly southwestern stuff. Some of the books and shirts are mine. https://ajo-copper-news.com
Ajo Copper News Store
Ajo Copper News Store
ajo-copper-news.com
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Eagle Sarmount talks about a lot of things close to my heart. What he calls non rotating skyhooks (vertical orbital tethers), how delta V budget influences mass fraction and therefore reusability, extraterrestrial propellent sources to break delta V budgets into smaller chunks. How non rotating sky hooks can enjoy the great ISP of ion thrusters.
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Zylon Mars Elevator
Mars Elevator With Conventional Materials Mars spins nearly the same rate as earth (about a 24.62 hour day). Mars has about 1/9 earth's mass. At 17,000 kilometers, altitude of Mars synchronous orbit is less than half the altitude of geosynchronous orbit (ab...
Zylon Mars Elevator
Zylon Mars Elevator
hopsblog-hop.blogspot.com
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Some folks are seriously looking at cube sats to Deimos and Phobos! http://deimophobia.blogspot.com
MarMoSet
MarMoSet
deimophobia.blogspot.com
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Matrices
I enjoy linear algebra. I use it in making polyhedra and drawings. Here are a few visualizations of matrices. To keep it simple I use 2x2 matrices. 2x2 matrices act on vectors. The vertices of polygons in a plane can be described vectors, so these same tran...
Matrices
Matrices
hopsblog-hop.blogspot.com
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http://www.rocketpunk-manifesto.com/2017/01/trantor-big-town.html

So happy to see signs of life from the Rocketpunk blog. It's been dormant too long.

This talks about Asimov's Trantor, a huge megaopolis and capital of the galaxy from Asiimov's Foundation series. The post speculates about how huge a city could become.

Which prompted me to comment for smaller bodies the entire volume is accessible, not just the outer shell. Plus asteroid belts provide more surface area to radiate waste heat as well as more surface area to harvest energy from sunlight.

So it is my belief that the largest populations will inhabit rings of smaller bodies about a star. These archipelagos will host megapoleis that stretch the imagination.

In the comments Nyrath responded with a neat quote from Asimov's Strikebreaker. Seems Asimov was well aware of the advantages smaller bodies confer. In fact it was Isaac Asimov who coined the term "planetary chauvinism".
Trantor: the Big Town
Trantor: the Big Town
rocketpunk-manifesto.com
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Lamentable Lagrange articles
Gravity doesn't cancel at the Lagrange points "There are places in the Solar System where the forces of gravity balance out perfectly. Places we can use to position satellites, space telescopes and even colonies to establish our exploration of the Solar Sys...
Lamentable Lagrange articles
Lamentable Lagrange articles
hopsblog-hop.blogspot.com
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