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Archive for the ‘space’ category: Page 1025

Dec 9, 2008

Why antropic principle stops to defend us

Posted by in categories: existential risks, futurism, space

In the volume “Global catastrophic risks” you could find excellent article of Milan Circovic “Observation selection effects and global catastrophic risks”, where he shows that we can’t use information from past records to estimating future rate of global catastrophes.
This has one more consequence which I investigate in my article: “Why antropic principle stops to defend us. Observation selection, future rate of natural disasters and fragility of our environment” — that is we could be in the end of the long period of stability, and some catastrophes may be long overdue and what is most important we could underestimate fragility of our environment which could be on the verge of bifurcation. It is because origination of intellectual life on the Earth is very rare event and it means that some critical parameters may lay near their bounds of stability and small anthropogenic influences could start catastrophic process in this century.

http://www.scribd.com/doc/8729933/Why-antropic-principle-sto…vironment–

Why antropic principle stops to defend us
Observation selection, future rate of natural disasters and fragility of our environment.

Alexei Turchin,
Russian Transhumanist movement

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Nov 25, 2008

Giant planets ignition

Posted by in categories: biotech/medical, existential risks, futurism, geopolitics, nanotechnology, nuclear weapons, rants, space

I wrote an essay on the theme of the possibility of artificial initiation and fusion explosion of giants planets and other objects of Solar system. It is not a scientific article, but an atempt to collect all nesessary information about this existential risk. I conclude that it could not be ruled out as technical possibility, and could be made later as act of space war, which could clean entire Solar system.

Where are some events which are very improbable, but which consequence could be infinitely large (e.g. black holes on LHC.) Possibility of nuclear ignition of self-containing fusion reaction in giant planets like Jupiter and Saturn which could lead to the explosion of the planet, is one of them.

Inside the giant planets is thermonuclear fuel under high pressure and at high density. This density for certain substances is above (except water, perhaps) than the density of these substances on Earth. Large quantities of the substance would not have fly away from reaction zone long enough for large energy relize. This fuel has never been involved in fusion reactions, and it remained easy combustible components, namely, deuterium, helium-3 and lithium, which have burned at all in the stars. In addition, the subsoil giant planets contain fuel for reactions, which may prompt an explosive fire — namely, the tri-helium reaction (3 He 4 = C12) and for reactions to the accession of hydrogen to oxygen, which, however, required to start them much higher temperature. Substance in the bowels of the giant planets is a degenerate form of a metal sea, just as the substance of white dwarfs, which regularly takes place explosive thermonuclear burning in the form of helium flashes and the flashes of the first type of supernova.
The more opaque is environment, the greater are the chances for the reaction to it, as well as less scattering, but in the bowels of the giant planets there are many impurities and can be expected to lower transparency. Gravitational differentiation and chemical reactions can lead to the allocation of areas within the planet that is more suitable to run the reaction in its initial stages.

The stronger will be an explosion of fuse, the greater will be amount of the initial field of burning, and the more likely that the response would be self-sustaining, as the energy loss will be smaller and the number of reaction substances and reaction times greater. It can be assumed that if at sufficiently powerful fuse the reaction will became self-sustaining.

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Oct 1, 2008

SpaceX Falcon 1 Rocket Reaches Orbit on 4th Try

Posted by in categories: habitats, lifeboat, space

This is cross-posted from my blog. This milestone by SpaceX is directly relevant to programs by Lifeboat such as the AsteroidShield and SpaceHabitat, and possibly also (eventually) to Space-Based Solar Power.

SpaceX Falcon 1 Rocket Launch photo

Stars My Destination
After the third try, Elon Musk, the founder of SpaceX, co-founder of Paypal, chairman of SolarCity and chairman of Tesla Motors (beat that resumé!) was interviewed by WIRED about the difficulties of making his space rockets reach orbit:

Wired.com: How do you maintain your optimism?

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Jul 15, 2008

Apophis Asteroid still a risk for 2036

Posted by in categories: asteroid/comet impacts, defense, existential risks, space

On April 16, 2008, NASA News Release 08–103 reaffirmed that its estimation of a 1 in 45,000 chance of impact in 2036 remains valid.

The B612 Foundation is working towardcs the goal of of significantly altering the orbit of an asteroid in a controlled manner by 2015.

the B612 Foundation made estimates of Apophis path if a 2036 Earth impact were to occur.

The impact result is a narrow corridor called the ‘risk corrider’ which would be a few miles wide. Countries estimated to be in the direct path:

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May 29, 2008

The Heirs of Prometheus

Posted by in categories: human trajectories, space

Crossposted from the blog of Starship Reckless

Note: Like anyone who’s breathing, I have been tracking the Phoenix Lander. So I thought this might be a good moment to share a personal memory of one of its ancestors. That one did not survive to fulfill its mission, but the dream stayed alive. What I said then is even more true today, almost a decade later. The Greek version of this article was published in the largest Greek daily, Eleftherotypia (Free Press).

Prometheus

Prometheus Stealing Fire by André Durand (cropped)

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May 28, 2008

Carnival Of The Space Geeks (Mars, Stars And Life From Afar?)

Posted by in category: space

Hello everyone, and welcome to the 56th Carnival of Space!

My name is Darnell Clayton (of Colony Worlds) and welcome to the Lifeboat Foundation, a not-for-profit organization dedicated to preserving civilization upon our fragile world (as well as expanding it off world if all else fails).

Feel free to explore around the site, and if you have any questions, do not hesitate to ask. Now without further ado, here is the Carnival of the Space Geeks!

NASA Phoenix Mars Lander

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Apr 8, 2008

Disruptions from small recessions to extinctions

Posted by in categories: biotech/medical, business, defense, existential risks, futurism, habitats, lifeboat, nanotechnology, space, sustainability

Cross posted from Next big future by Brian Wang, Lifeboat foundation director of Research

I am presenting disruption events for humans and also for biospheres and planets and where I can correlating them with historical frequency and scale.

There has been previous work on categorizing and classifying extinction events. There is Bostroms paper and there is also the work by Jamais Cascio and Michael Anissimov on classification and identifying risks (presented below).

A recent article discusses the inevtiable “end of societies” (it refers to civilizations but it seems to be referring more to things like the end of the roman empire, which still ends up later with Italy, Austria Hungary etc… emerging)

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Mar 14, 2008

Dreamers of a Better Future, Unite!

Posted by in categories: biological, futurism, geopolitics, space

[Crossposted from the blog of Starship Reckless]

Views of space travel have grown increasingly pessimistic in the last decade. This is not surprising: SETI still has received no unambiguous requests for more Chuck Berry from its listening posts, NASA is busy re-inventing flywheels and citizens even of first-world countries feel beleaguered in a world that seems increasingly hostile to any but the extraordinarily privileged. Always a weathervane of the present, speculative fiction has been gazing more and more inwardly – either to a hazy gold-tinted past (fantasy, both literally and metaphorically) or to a smoggy rust-colored earthbound future (cyberpunk).

The philosophically inclined are slightly more optimistic. Transhumanists, the new utopians, extol the pleasures of a future when our bodies, particularly our brains/minds, will be optimized (or at least not mind that they’re not optimized) by a combination of bioengineering, neurocognitive manipulation, nanotech and AI. Most transhumanists, especially those with a socially progressive agenda, are as decisively earthbound as cyberpunk authors. They consider space exploration a misguided waste of resources, a potentially dangerous distraction from here-and-now problems – ecological collapse, inequality and poverty, incurable diseases among which transhumanists routinely count aging, not to mention variants of gray goo.

And yet, despite the uncoolness of space exploration, despite NASA’s disastrous holding pattern, there are those of us who still stubbornly dream of going to the stars. We are not starry-eyed romantics. We recognize that the problems associated with spacefaring are formidable (as examined briefly in Making Aliens 1, 2 and 3). But I, at least, think that improving circumstances on earth and exploring space are not mutually exclusive, either philosophically or – perhaps just as importantly – financially. In fact, I consider this a false dilemma. I believe that both sides have a much greater likelihood to implement their plans if they coordinate their efforts, for a very simple reason: the attributes required for successful space exploration are also primary goals of transhumanism.

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Mar 8, 2008

Mankind’s secrets kept in lunar ark

Posted by in categories: biotech/medical, defense, space

IF civilisation is wiped out on Earth, salvation may come from space. Plans are being drawn up for a “Doomsday ark” on the moon containing the essentials of life and civilisation, to be activated in the event of earth being devastated by a giant asteroid or nuclear war.

Construction of a lunar information bank, discussed at a conference in Strasbourg last month, would provide survivors on Earth with a remote-access toolkit to rebuild the human race.

A basic version of the ark would contain hard discs holding information such as DNA sequences and instructions for metal smelting or planting crops. It would be buried in a vault just under the lunar surface and transmitters would send the data to heavily protected receivers on earth. If no receivers survived, the ark would continue transmitting the information until new ones could be built.

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Feb 8, 2008

How long did you want that space elevator cable?

Posted by in categories: chemistry, geopolitics, nanotechnology, space

Many of you have recently read that a research team at the University of Illinois led by Min-Feng Yu has developed a process to grow nanowires of unlimited length. The same process also allows for the construction of complex, three-dimensional nanoscale structures. If this is news to you, please refer to the links below.

It’s easy to let this news item slip past before its implications have a chance to sink in.

Professor Yu and his team have shown us a glimpse of how to make nanowire based materials that will, once the technology is developed more fully, allow for at least two very significant enhancements in materials science.

1. Nanowires that will be as long as we want them to be. The only limitations that seem to be indicated are the size of the “ink” reservoir and the size of spool that the nanowires are wound on. Scale up the ink supply and the scale up size of the spool and we’ll soon be making cables and fabric. Make the cables long enough and braid enough of them them together and the Space Elevator Games may become even more exciting to watch.

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