Sunday, September 27, 2009

New rockets on Dr Space Junk's Space Heritage List

I've been a bit quiet on this front lately, but the prompting of space geographer Fraser MacDonald, and the aerial Brett Holman's recent visit to the UK National Space Centre (Leicester) led me to add two more objects:  the sounding rocket WAC Corporal (the subject of Fraser's research) and the lovely Blue Streak, of course.  They join the V2 as the only rockets so far on the Space Heritage List.

Other rockets I should include are the Agena - plenty of them still in orbit, and no doubt on the ground, and in museums, Saturn V, Redstone, the R7 Semiorka, and Veronique and the Pierres Precieuses (still think that is a great name for a band).  I tend to neglect rockets as I find them slightly less fascinating than satellites.  It's also slightly harder to find out if there are extant examples, and then there is the question of their actual existence to begin with (see my earlier post on the identity of rockets).


Monday, September 21, 2009

Pentagon Wants ‘Space Junk’ Cleaned Up

The orbit around Earth is a very messy place and the Pentagon’s far-out research arm wants to do something about it. The Defence Advanced Research Projects Agency put out a notice last week requesting information on possible solutions to the infamous space debris problem.

“Since the advent of the space-age over five decades ago, more than thirty-five thousand man-made objects have been cataloged by the U.S. Space Surveillance Network,” the agency notes. “Nearly twenty-thousand of those objects remain in orbit today, ninety-four percent of which are non-functioning orbital debris.”

These figures do not even include the objects too small to count. Hundreds of thousands of these smaller objects are estimated to exist, and as debris hits other debris, it creates even more small pieces, exponentially increasing the objects that could threaten satellites and spacecraft.

Space debris has long been a concern as the number of satellites in orbit has increased over the years. But the issue was again highlighted in 2007, when a Chinese anti-satellite missile test created a massive debris field of some 40,000 pieces. The next year, the U.S. conducted its own shoot down of an errant satellite, creating yet another field of debris. The concern is that these pieces of debris could strike satellites, or a manned spacecraft, like the International Space Station.

It doesn’t take much to cause a catastrophe; even something as small as a paint chip could prove potentially disastrous if it struck the space shuttle. Darpa is looking for “solutions that could effectively remove significant amounts of debris in a cost-effective fashion.” No doubt, there will be a good mix of creative, unusual and bizarre suggestions.

Source:  Wired


Wednesday, September 09, 2009

Dr Space Junk goes to Maralinga


Or will go, to be more precise. I'm so excited I can hardly contain myself. At the end of September I will be accompanying my nuclear heritage colleague Mick Broderick on a road trip to Maralinga and Emu Field. Must polish up the steel caps and prepare other field gear!


Monday, September 07, 2009

Space junk hurtles towards Space Station

NASA is preparing contingency plans in case a large piece of orbital debris is deemed a threat to the International Space Station. The chunk of space junk measures about 19 square meters, large enough to do significant harm to the ISS in the event of a collision. As a precaution, NASA mission controllers are preparing a plan that would see the ISS fire its booster rockets in order to escape the path of the debris, which is circling the earth in an elliptical orbit.

NASA currently estimates that the space junk will come within 3 kilometers of the ISS on Friday morning. The agency did not state the origin of the debris, but the Earth is encircled by countless particles of refuse from spent satellites, industrial waste, dust, and other sources. The ISS is equipped with shielding that offers some protection from space junk.

Information Week USA


Thursday, September 03, 2009

Orroral Valley Tracking Station - all systems go

On Tuesday I flew to Canberra for the announcement of the 2009-2010 ACT Heritage Grants. And yes - I got one, to do background research and a geophysical survey of the Orroral Valley tracking station, in collaboration with my elegant geophysicist friend I. Moffat. Everyone was very enthusiastic about the project, which was lovely.

So now I really have to think about the rationale of contemporary archaeology (which is the subject of a recent debate on the Contemp-Hist-Arch list too). What, exactly, can I use archaeological methods to find out that documents/oral histories can't? A simple enough question, but surprisingly difficult to answer .....


Sunday, August 23, 2009

The phenomenology of space landscapes

Minitrack pylons at Island Lagoon (author's image)
There are happy occasions when the rigours of teaching become worthwhile. This morning I am reading drafts of an honours thesis by my student Claire, who is working on a phenomenological analysis of the Twenty Mile Mission near Weipa in northern Queensland (in collaboration with my fellow archaeology blogger Mick Morrison). Her discussion of Christopher Tilley's application of phenomenology to Neolithic/Mesolithic monumental landscapes is particularly good.

So in the back of my brain I was thinking about the Island Lagoon tracking station near Woomera, and a photo I took at my last visit, of an array on concrete columns which look like building stumps. In terms of theses columns becoming part of the archaeological record, I likened them to Stonehenge or Avebury ....

And, since I am also very much thinking about the kinds of research questions that could be answered by survey or excavation of a tracking station (intending to do this at Orroral Valley in the ACT), perhaps in terms of the interaction of everyday life and high technology, and the social experience of high technology, it occurred to me that a phenomenology of space landscapes might be the way to connect these elements ....

Space landscapes may also be high security landscapes, so not unlike missions/plantations/asylums/prisons etc in terms of surveillance, boundaries between the inside and outside, domination and resistance etc etc. But individuals would be constructed very differently within the space landscape in terms of their agency.

These are vague thoughts so far.


Saturday, August 15, 2009

The smell of space

Reading Volume 1 of Ray Bradbury's short stories at the moment. A mixed bag in some ways - much that is not science fiction, and much that is clearly written to pay the rent.


And from the opened case spilled his black uniform, like a black nebula, stars glittering here or there, distantly, in the material. I kneaded the dark stuff in my warm hands; I smelled the planet Mars, an iron smell, and the planet Venus, a green ivy smell, and the planet Mercury, a scent of sulphur and fire: and I could smell the milky Moon and the hardness of the stars.

Annoyingly, the volume does not provide original publication dates for the stories, but this is clearly written in the time when it was thought that Venus was tropical and may support life.


Sunday, July 26, 2009

Preserving spacesuits and Tranquility Base

Museum battles to preserve moon suits for posterity
By Virginie Montet (AFP) – Jul 16, 2009

WASHINGTON — They have travelled further than any fashion item on Earth, surviving a hostile environment and extremes of heat and cold on a world far from ours. But now age is catching up with NASA spacesuits. "There is a lot of decay," admitted sadly Cathy Lewis, curator at the Smithsonian National Air and Space Museum, who is charge of looking after a dozen spacesuits worn on the Apollo missions.

She even has under her care the suit worn by Neil Armstrong when he stepped out on the lunar surface on July 20, 1969, and made history as the first man to walk on the moon.

But she agrees the passage of time has not been kind to these historic artifacts. "They don't do well because of the light and the humidity," she said. "They are made out of 21 layers of synthetic material. They are brittle," she said, adding that over time an ongoing chemical reaction between the different materials in the suits still encrusted with moon dust was taking its toll.

Displayed behind glass at the museum since the late 1960s, the spacesuits have been withdrawn to be restored or at least to halt the ravages of decay as the United States prepares to mark the 40th anniversary of the moon landings. "Most of them are in restoration, but we can put them on display in a controlled environment for a short period of time," said museum curator Allan Needell.

The custom-fit suits are made of a complex mixture of Teflon, polyvinylchloride and latex laced with tubing all aimed at allowing the astronauts to carry out their missions in the harshest of all environments. Today's suits have interlockable pieces so that none of the astronaut's skin is exposed to space, while multiple layers help protect the astronaut from extreme cold and heat. It is waterproof, fire-resistant and also made of the same material as bullet-proof vests.

Lewis said the spacesuits made for the 12 moonwalkers were "made for very hard conditions, but for a very short period of time." She said the gloves were coming apart, the metallic layers were rusting and the rubber joints were deteriorating.

The suits only spent a few days on the moon, where temperatures oscillate between minus 150 degrees Celsius and 120 degrees Celsius. But they have spent the rest of the four decades in some of the nation's most humid places, like Houston, Texas, home to the Johnson Space Center; Florida, where the Kennedy Space Center is located; or the museum in Washington, known for its sticky summers.

Lewis said that to preserve this part of history it is unlikely that the whole suits -- topped with a helmet with its visor blackened by a layer of gold to protect it from ultra-violet light -- will continue to be displayed. "We won't display them as a suit any more, but we hope to have the component on display in five years" such as gloves or boots if technicians manage to halt the decay she said. It depends on the funding, she added.

The lunar lander is also undergoing a make-over.

The four-footed module, which is seven meters high, is one of 12 constructed by NASA for the Apollo program which ended in 1972. The one on display never went into space but is identical to the others which were left on the moon when the astronauts returned to Earth.

Along with the astronauts' footprints still imprinted on the lunar surface, the museum curators are anxious to conserve the site of the original moon landings, especially as NASA gears up for a return by 2020.

"This is an actual artifact," said Needell of the landing site at the moon's Sea of Tranquility. "Let's hope the next ones won't put footprint over the old footprint at Tranquility Base. I hope they will leave it alone," he said, worried that future generations of moonwalkers may try to remove pieces of history and sell them on eBay.

"It's not abandoned property, it belongs to NASA," he stressed.

Copyright © 2009 AFP. All rights reserved.
http://www.google.com/hostednews/afp/article/ALeqM5jDNAOzXhwo3c3_XlG4ivCstjZYdQ


Saturday, July 18, 2009

Dr Space Junk at the End of the World Symposium






















Next Friday evening, 24th July, I am talking at the End of the World Symposium in Melbourne, about the space heritage of the solar system. The evening is to commemorate the 40th anniversary of the Apollo 11 moon landing. More information is available at http://headquarters.org.au/index.php?/state-of-design-festival/end-of-the-world-souvenir-shop/. Do come!


Thursday, July 09, 2009

Space archaeologists in Inseminoid


So finally I saw this cult classic, featuring a bunch of hapless space archaeologists and a nasty alien that impregnates one of the team for reasons unknown. I dare say it has some kitsch value for those who like this sort of thing, and I have decided that I don't. Still, no stone left unturned, etc etc.

Wednesday, June 24, 2009

Just published: The Handbook of Space Engineering, Archaeology and Heritage


Handbook of Space Engineering, Archaeology, and Heritage
Edited by Ann Darrin (John Hopkins University) and Beth L. O'Leary (New Mexico State University)
Series: Advances in Engineering
CRC Press (Taylor and Francis Group)

Expanding the discipline of archaeology into the cosmos, this unique volume offers a perspective rarely considered. It discusses the trail of debris that humankind has left behind during space exploration as artifacts worthy of investigation, whereas they provide evidence to our heritage as a planet. Gathering together a number of leading thinkers, it discusses topics that are no longer merely science fiction. They discuss the landscape of space, spacecraft forensics and field techniques, our environmental footprints, and the establishment of an archaeological record in space. Highly authoritative, it goes a long way in separating fact from science fiction.



Saturday, June 20, 2009

The scientific value of astronaut waste


Thinking about this again after a conversation with Professor Maciej Henneberg from the University of Adelaide. At present, people only stay in space for relatively short periods of time. (The longest occupation was a USSR cosmonaut who spent over a year on Mir in 1994-1995). There are many health issues related to living in space; one of the major risks is prolonged exposure to cosmic rays and other high energy nasties.

So in terms of assessing the long term effects of this exposure on human tissues, we're lacking serious longitudinal data.

But wait! Perhaps we're not .... you see where I'm going with this. Studying human biomolecules from liquid/solid waste ejected during crewed missions could supply us with that data, without having to risk the health of actual people! The very fact that DNA and other complex molecules would have been degraded by high energy particles is not an impediment to scientific research: it is in fact the very information that we seek.

Of course there are many other factors to consider ... location and retrieval, dating the length of exposure, the source mission, the likelihood of survival in LEO, etc etc. We know that Mir was surrounded by a halo of frozen urine particles, and returned aerogel surfaces have preserved yellowed traces of impacts with it ... so perhaps this is the best way to obtain the samples.

Someone will be persuaded of the value of this argument eventually .....


Sunday, June 07, 2009

The heritage values of Tranquility Base - from the Los Angeles Times


Needless to say, I agree with the argument presented here.

Space archaeology
The final frontier already has some historic sites -- such as Tranquility Base on the moon -- that deserve protection from well-meaning but potentially destructive private projects in outer space.
By Jill Thomas and Justin St. P. Walsh
June 1, 2009

Cultural heritage has emerged in the last few decades as a subject of increasing debate and interest. Controversies such as the Greek claim on the Parthenon Marbles, in the collection of the British Museum since 1816, the destruction of the Bamiyan Buddhas in Afghanistan in 2001 and the looting of the Iraq National Museum in Baghdad in 2003 have shown how objects and sites can have significance for both scholars and the public.

Nations and collectors claim ownership, while disenfranchised populations assert their rights and identities and experts work to preserve fragile ruins. Now, efforts to preserve archaeological remains face a vast and challenging new frontier lacking definitive legislative regulation: outer space.

Man-made objects preserved in the vacuum of space are irreplaceable artifacts of humanity's scientific achievements. Although the United States retains jurisdiction over the equipment left at the moon's Tranquility Base, the 1969 Apollo 11 landing site, for example, Neil Armstrong's famous words highlighted the importance of the first moon landing for all of us: "That's one small step for a man, one giant leap for mankind."

Today, however, some of the most important elements of that shared space heritage, including Tranquility Base, are threatened. The Lunar X Prize, a $20-million award funded by Google, is being offered by the X Prize Foundation, which previously held a competition to develop private space travel. The first private group to land and maneuver a robotic rover on the moon before Dec. 31, 2012, will be the winner.

A "Heritage Bonus Prize" of perhaps $1 million (the actual amount has not yet been made public) will be given to the team that also sends back images of man-made objects on the moon. In order to take photographs of these artifacts, groups would have to first target their craft to land close to a previous landing site, then move their rover as close as possible -- even into the area where human activity occurred 40 years ago.

The rules for the competition state only that participants seeking the Heritage bonus must have their plans approved by the foundation "in order to eliminate unnecessary risks to the historically significant sites of interest," but there is no explanation what criteria will be used to judge risks as "unnecessary" or what steps are recommended to avoid damage.

The sites of early lunar landings are of unparalleled significance in the history of humanity, and extraordinary caution should be taken to protect them. Armstrong's iconic footprint and the American flag placed by the astronauts may yet be intact -- there is no wind or rain on the moon to damage or destroy them.

NASA, the most experienced, successful and best-funded space agency in the world, has occasionally found it difficult even to place satellites in orbit. And those missions are far simpler than landing a robotic rover on the moon within a kilometer or two of a specific, and culturally important, location. Private groups operating on much smaller budgets and attempting such a project for the first time are likely to encounter failure. But far more catastrophic would be a near-success -- a crash landing, for example, in which a historic site was damaged or destroyed.

One team in the competition, Astrobotic Technology, plans to launch as early as December 2010, with Tranquility Base as its stated target. It is not too late for the sponsors to withdraw their bonus prize for approaching and imaging lunar landing sites. Indeed, they should ban competitors from targeting regions within 100 kilometers of prior lunar landings, with violators excluded from receiving any prize money. The bonus money could instead be offered as the award in a competition to design plans for studying, preserving and protecting sites such as Tranquility Base, and presenting them to the public.

We have no doubt that space tourism, perhaps even as envisioned by the X Prize Foundation, will be a reality someday. The competition itself has already inspired interest in the Apollo sites among the general public. Once lunar travel becomes easier, there will also be significant interest from scholars in the emerging field of space archaeology. The demands and desires of both groups must be respected. But in the absence of effective international agreements that treat space objects as heritage, it is necessary to take a step back and consider what the best strategy would be for permanent preservation of sites and objects of historic significance.

We have the opportunity now to ensure that there will still be something there to see when tourists eventually visit, and for our descendants to understand and appreciate.

About the authors: Jill Thomas is a graduate student in Louisiana State University's School of Art who has done research on cultural heritage in space. Justin St. P. Walsh is an assistant professor of art history and archaeology in the school.



Sunday, May 10, 2009

Space adventures in Canberra - could this be the Love Pygmy?


My elegant geophysicist friend I. Moffat accompanied me on my tracking station expedition a couple of weeks ago in Canberra. He took me to a former planetarium with the most wonderful futuristic design (some have commented that this is how they imagine the Love Pygmy).


Wednesday, May 06, 2009

My very own Sputnik

A wonderful archaeology student, Alex, made a 1/4 scale model of Sputnik 1 for his class today. It's absolutely gorgeous, and despite my protests, he has insisted on giving it to me. I am absolutely overcome with delight!


Sunday, April 26, 2009

Dr Space Junk does Canberra tracking stations

What an amazing three days. I've just returned from Canberra, where I gave a presentation in the Quaternary Forum series at the Australian National University, and visited three tracking stations, Tidbinbilla, Honeysuckle Creek, and Orroral Valley, in the company of my elegant geophysical friend I. Moffat. SO much potential. I will post some photos when they are downloaded.

So I'm planning a field season now, and this means tackling the thorny question of just what I could learn by excavating abandoned tracking stations. I have many ideas, but I'm not sure how robust they are - whether they justify an excavation. The geophys, though .....




Saturday, April 18, 2009

New entries on Dr Space Junk's Space Heritage List

I am still working away at this, and will have to do some serious thinking about it soon as I rashly promised to give a research seminar in May about how I made the list!

There are currently 44 entries in Dr Space Junk's Space Heritage List. In the last month, I have added the following:


Launch sites:

Baikonur (Russia)
Jiuquan (China)
Barreiro do Inferno (Brazil) (I love this - the "Gates of Hell"!)
The San Marco platform (Italy/Kenya)

Orbital:

444 people have sent space heritage gifts on Facebook, so you can see it's not just me and my friends! Fortunately I found out recently how to track those which I have sent myself, so I can remove myself from the stats when I get to the stage of analysing them.


Tuesday, April 14, 2009

The edge of space


Hold on to your hats, or in this case, your helmets: Scientists have finally pinpointed the so-called edge of space — the boundary between Earth's atmosphere and outer space.

With data from a new instrument developed by scientists at the University of Calgary, scientists confirmed that space begins 118 kilometres above Earth's surface. A little further than originally assumed.

The boundary recognized by many in the space industry is also a somewhat arbitrary 100 kilometres. Scientist Theodore von Kármán long ago calculated that at this altitude the atmosphere is so thin that it's negligible, and conventional aircraft can no longer function because they can't go fast enough to get any kind of aerodynamic lift.

This 100km boundary is accepted by the Federation Aeronautique Internationale (FAI), which sets aeronautical standards.

The United States, however, has never officially adopted a set boundary standard because it would complicate the issue of overflight rights of satellites and other orbiting bodies, according to NASA.

NASA's mission control uses 122 kilometres as their re-entry altitude because that's where the shuttle switches from steering with thrusters to manoeuvring with air surfaces, NASA states.

Others point out that the "Now Entering Space" sign should be posted way out at 21 million kilometres because that's the boundary where Earth's gravity is no longer dominant.


Article by Andrea Thomspon, 9 April 2009.  Copyright-Imaginova Corp. Thanks to Dave Reneke for passing this on.


Tuesday, March 24, 2009

Digital people - my review of Incandescence

My review of Greg Egan's Incandescence is out this month in the Australian Book Review. Here is the opening paragraph:
What do you do when you can live for thousands of years, travel nearly everywhere you wish in the galaxy, and customise your environment and your body to be exactly the way you like? When there is no risk of starvation, injury or disease? When your back-up simply takes over when, for some reason, you die? What do you do when the whole universe is your playground and you’re just plain bored?
Greg, if you're out there, I think I am nearly brave enough to want to know your reactions .......