Showing posts with label Dyson sphere. Show all posts
Showing posts with label Dyson sphere. Show all posts

Sunday, March 08, 2015

Congohelium and computronium: the thinking materials of the far future

This is my abstract for the Theoretical Archaeology Group New York University conference in May 2015.


In this paper, I want to explore two materials of the far future and use them to imagine the material worlds they inhabit. In Cordwainer Smith’s classic short story Under Old Earth, congohelium is an unstable material composed of “matter and antimatter laminated apart by a dual magnetic grid” (Smith 1966). The Douglas-Ouyang planets, an artificial cluster of planets with a dull malevolent sentience, communicate with Earth through the music of the congohelium.
Sunboy makes music with the congohelium.
Illustration by Virgil Finlay.
Computronium is the material of a hypothetical giant super-computing Matrioshka Brain, structured as nested Dyson shells of processing elements which employ the entire energy output of the sun. In Robert Bradbury’s conception, an element of computronium consists of a cooling system, a solar power array, a nanoprocessor and vernier thrusters for station-keeping – very like contemporary satellites. In the far future, today’s satellites could be considered equivalent to eoliths, with some resemblance of form, yet barely recognisable as cultural artefacts.
In both cases we have materials which act as the intermediary between an unimaginable entity and the humans who desire to communicate with it. They are the new elements in a periodic table of thinking materials. How would we classify these materials as archaeologists, or use them to infer the behaviour of mega-engineered structures? This is the most extreme anthropocene, where the balance of materials between ‘natural’ and ‘manufactured’ is altered at the nano- and solar-system scale; where prosaic science meets a new poetics of space.





Sunday, June 30, 2013

Aloha avatar: space archaeology in Hawai'i

The last few months have brought many things, some anticipated, and some entirely unexpected.

In early April I went to the Society for American Archaeology conference in Honolulu, where my excellent colleagues Dr Beth Laura O'Leary and Lisa Westwood had organised a space archaeology session. Unfortunately, it was on at 8.30 am on the first day of the conference .... but we still had a reasonable turn-out, and a great array of papers, including one from the very dynamic Ann Garrison Darrin, co-editor of the Handbook of Space Engineering, Archaeology and Heritage. I was very pleased to meet new space colleagues Joe Reynolds and Justin Walsh. Space.com reporter Leonard David, always a big supporter of space archaeology, wrote about the session here.

My contribution was, no surprise, on orbital debris (see abstract below).


Gorman, Alice (Australian Cultural Heritage Management)

[13]

Robot Avatars: The Material Culture of Human Activity in Earth Orbit

Since the launch of Sputnik 1 in 1957, more than 7000 rocket launches have delivered payloads into space that now are a critical part of the infrastructure of modern life, particularly in telecommunications and navigation. This paper discusses the broad research questions that can be addressed by investigation of the thousands of satellites, rocket bodies, and pieces of junk currently in Earth orbit. Their materials and design reflect the nature of our social and political interactions with space and adaptations to a new environment, a robotic colonial frontier. Factors that contribute to the character of this material record include microgravity, extreme temperature and radiation conditions, national political and scientific agendas, and technological styles through time and across terrestrial cultures. In other words, what can space junk tell us about contemporary life on Earth? However, unlike terrestrial artifacts, satellites in orbit are barely visible to us and are not designed to interact with human bodies in any way. They may represent the beginnings of a technological trajectory that will transform how human cultures relate to time and space.

The slightly cryptic last sentence alludes to Dyson spheres/swarms and Matrioshka brains - not my usual territory, but it seemed to fit, so I went there.

I loved Honolulu. (Someone said to me before leaving, 'But it's just like the Gold Coast', as if that were a bad thing! I love the Gold Coast too. Tacky has its own aesthetic). Mai Tais and Pina Coladas were $4.00 - what's not to love about that?  In the spirit (ha ha) of this blog, I offer a Mai Tai recipe to drive away the winter blues. Fittingly, Mai Tai is said to be based on the expression 'Maita'i roa ae', which has been translated by some as 'out of this world'.

The ingredients are in imperial measurements 'cos that's how those kooky Americans do things.

1 oz light rum
1 oz dark rum
1/2 oz lime juice
1/2 oz orange curacao
1/2 oz orgeat syrup (I think you can use Amaretto or other almond liqueurs here)
Maraschino cherry for garnish

Put all the ingredients except the dark rum into a cocktail shaker with ice cubes and shake well. Strain into glass with lots of ice and top with the dark rum. Makes 1.

On the last day of the idyll, I went on a road trip around the island of Oa'hu with Jo Smith and Jordan Ralph, in a Mustang convertible. Does it get any better than that? And - joy oh joy - on the edge of the island, we came across a satellite tracking station.

Of course it was a military one, so I knew I'd never get inside, but I did want to take some photos. This was where things started to go awry. I went up to the guard house to ask permission, and upon leaving it, I missed a concrete step and tore my Achilles tendon at both ends. I didn't fall, as there were two bollards that I grabbed for support, but perhaps it would have been better if I had: more bruises and sprains no doubt, but my calf would not have taken the full brunt of it.

Here's the photo, taken by Jordan Ralph. I could barely walk but was determined not to give in.

It's only just occurred to me that I look a little like I'm attempting the hula here. It's more magician's assistant stance really - ta da! Or: here's one I made earlier!
And so began six weeks of crutches, ice, ultrasounds, physio, visits to the surgeon and lots of lying down. I may yet avoid surgery, but two and a bit months later I still can't walk properly and have a way to go yet.

And when I got back to Oz, in mid-April, I had only two weeks left to prepare for my next big adventure: TEDxSydney. Of that, more in another post.


Friday, July 09, 2010

Random thoughts: Matrioshka brains and analogies for outer space

Well, I've spent the last week in an intense frenzy of activity - finishing my paper for the Australian Space Development Conference, attending the conference and socialising perhaps just a little too much for the good health of my liver, and then falling back to Earth to prepare an Australian Archaeological Association submission about proposed mining in the Burra State Heritage Precinct ....  but let's not go there or I shall just get angry at the utter ineffectualness of those in South Australia who are supposed to be looking after our heritage.

So today, I'm catching up on four lost days of work and, and looking over the copious notes I wrote during the conference, about all sorts of things.

While researching for my paper, I was reflecting on the analogies we use to understand space (also inspired by Peterson 1997, see below), such as sea and sky, and how these might translate into heritage principles.  A talk by Mark Dankberg, CEO of ViaSat, on the first day of the conference, led me to ponder this further.  In my notes I have written "return to the idea of noosphere + the Matrioshka brain = new ways of conceiving space".

The noosphere was proposed by the intriguing and enigmatic Teilhard de Chardin, archaeologist and theologian, and as I recall it from a meagre high school study, it was about evolutionary development from the lithosphere to the biosphere to the noosphere, as the conscious thought characterising humanity grew with the population.  The noosphere extends into space, where our thought also now extends with cultural and technological developments.

The Matrioshka brain is a set of nested Dyson spheres, which form a nano-engineered computer around a star, only attainable by a level of technological development far beyond ours.  So I see it as kind of similar in some ways - it is a sort of hardware equivalent of the noosphere.  (I suspect how I visualise this owes something to the writings of Charles Stross).  Of course this is simplifying the idea radically, but I think the conjunction of the two in my own brain is worth further contemplation in terms of how I want to re-conceptualise space.

References:
Peterson, M.J.  1997  The use of analogies in developing outer space law.  International Organization 51(2):245-274