Researchers at Stanford and Purdue universities seem to have discovered new physiscs. The main discovery is that the rate of radioactive decay in some elements is not contant over time. The theory is the variation is due to influence from neutrinos being emitted from the sun.
Jere Jenkins, a nuclear engineer at Purdue, found the rate of decay of manganese-54 dropped suddenly one night. Only later was it discovered that at that moment the sun had produced a massive solar flare. Other observations have found that measurements of the rate of nuclear decay vary seasonally. Other patterns show a 33 day cycle, which is the rate of rotation of the sun’s core.
This discovery is truly amazing. Current theories suggest the neutrino does not interact with matter in this way. If in fact the neutrino is interacting with atomic nuclei and influencing the rate of nuclear decay, than some new principal of physics must be involved.
Although no theory has yet been put forward as to how this may work, or what new physics might explain the variation, the impact on modern science will be profound. To begin with, basic assumptions about radioactive decay are used to date things. If the rate of decay can change, the dates may also change, which could affect everything from paleontology to climate change.
Perhaps more astounding is the possibilities of applications of these new principals of physics. Being able to manipulate the rate of radioactive decay might bring new kinds of nuclear reactors. Perhaps a way to stop a nuclear meltdown by arresting the rate of nuclear decay in the fuel rods, or maybe even finding a way to make hydrogen fusion feasible. Perhaps the transmutation of atomic elements might be possible, if the atomic nuclei can be caused to decay more readily. More sinister applications might include new kinds of nuclear weapons, or even a disintegration ray that would cause atoms and molecules to simply fall apart.
Curiously, the discovery was originally made by Ephraim Fischbach, a researcher at Purdue, who was trying to use radioactive decay as a source of random numbers. It was his investigation that led to the discovery that the rate of decay inexplicably varied over time.
Carbon Nanotubes are one of the most talked about inventions in nanotechnology…but, what are they good for? There are pie in the sky dreams of using carbon nanotube fiber to create the space elevator ribbon, there are attempts to line it up as a near superconductor. But creating multi-mile long cohesive strips of the stuff is going to be hard. On a smaller scale it appears have some applications that might actually be achievable in the short term such as a synthetic muscle. Artificial muscles made from carbon nanotubes are 100 times stronger than human muscles. [link] Trippy.
http://blog.wired.com/defense/2009/03/darpa-muscle-re.html The first phase of the Pentagon's plan to regrow soldiers' limbs is complete; scientists managed to turn human skin into the equivalent of a blastema — a mass of undifferentiated cells that can develop into new body parts. Now, researchers are on to phase two: turning that cellular glop into a square inch of honest-to-goodness muscle tissue. This brings to mind Aubry deGrey’s prophecy: I expect many people alive today to live to 1000 years of age and to avoid age-related health problems even at that age.
In honor of the upcoming 200th birthday of Charles Darwin (Feb. 12, 2009) Nature has published 12 very elegant examples of evolution. If you have a Nature subscription you may go here: Darwin's enduring legacy Otherwise it is summarized at Wired magazine: 12 Elegant Examples of Evolution There are some cool examples listed such as the intermediate ancestor to whales, dinosaur feathers, competing epochs of water fleas and more. And as an added bonus to our vast readership here at techRivet, here is the wikipedia article on Charles Darwin for your elucidation: Charles Darwin
We are living in the future. Woman receives windpipe built from her stem cells. Stem cells harvested from the woman's bone marrow were used to populate a stripped-down section of windpipe received from a donor, which was then transplanted into her body in June. This needs to be automated and built into and automatic medi-doc®.
Lead Pencils. Neat story about the Mariner IV spacecraft and rocket scientists in Australia being too impatient and too smart by half to wait for NASA. Each square was divided up into 4 smaller squares. And we armed a team of 8 people each with a lead pencil. As the data came back, according to the video data value we would shade in a number of the squares.
Back before the physics of the universe were uneerstood philosophers and scientists believed that the earth floated in a sea of aether. The concept of the aether impacted science long after scientists had rejected the ancient theory of the five elements. Prior to fully modern theories of electromagnetism, many scientists applied the term "aether" to the pervasive medium through which they thought light must propagate. Aether (classical element) Of course now-a-days, us being so much more enlightened about the ways of the universe, we are so much closer to knowing how the universe works, we can be more precise...or maybe not. The newfound flow cannot be explained by, and is not directly related to, the expansion of the universe, though the researchers believe the two types of movement are happening at the same time. Unknown "Structures" Tugging at Universe, Study Says The more we know, the deeper the mystery goes.
TechRivet has previously posted about the Blue Brain project here: Reverse Engineering the Brain - IBM's Blue Brain Project. Here is another in depth article illustrating how they have been able to achieve so much: Out of the Blue Some key points: According to Markram, the patch clamp robot helped the Blue Brain team redo 30 years of research in six months. By analyzing the genetic expression of real rat neurons, the scientists could then start to integrate these details into the model. They were able to construct a precise map of ion channels, figuring out which cell types had which kind of ion channel and in what density. This new knowledge was then plugged into Blue Brain, allowing the supercomputer to accurately simulate any neuron anywhere in the neocortical column. "The simulation is getting to the point," Schürmann says, "where it gives us better results than an actual experiment. We get the same data, but with less noise and human error." The model, in other words, has exceeded its own inputs. The virtual neurons are more real than reality. Fascinating. Essentially Dr. Markram and his cohorts are getting to the point that they can replicate this small section of a rats brain in a supercomputer accurately and dynamically. Go read the whole thing.
tags: [ AI | brain | science]
Scientists develop artificial heart that beats like the real thing As much better than the Jarvik 7 than the Jarvik 7 was better than...well there wasn't really much before that. The artificial heart has been tested successfully on calves and sheep, according to Professor Carpentier, and will be implanted in patients with terminal heart failure for a clinical trial in two or three years’ time.
What is a Guelph? Is that the sort-of mediocre evil elf. Half as evil as a Drow? "This event was a relatively slow fireball that made it far into the Earth's atmosphere," said Phil McCausland, a postdoctoral researcher in planetary science at Western. "Most meteoroids burn up by the time they hit an altitude of 60 or 70 kilometers (37 to 44 miles) from the ground." - LiveScience.com ...and because you asked for it, here is where Guelph is. Hat Tip: Scooter over at GadgetGrid.com
From 1960 -1972, Yoichiro Nambu, Makoto Kobayashi and Toshihide Maskawa developed theories to explain how and when symmetry can break down at the subatomic level, predicting the existence of quarks and explaining the imbalance of matter and anti matter after the big bang, which explains the existence of all matter in the universe as we know it.
In a way, the concept of symmetry is similar to the concept of relativity. Symmetry says that there is no point of view which is "special". In nature, every event must take place symmetrically, so that if you look at it one way or another you see essentially the same picture. Perhaps the most important example of this is the symmetry between matter and anti matter. In physics, for every particle there is an anti particle. The particles and anti particles are perfectly symmetric. Everything a particle can do, the anti-particle does the same, and for every property of the particle the antiparticle has an equal but opposite property. So, for example, the mass fo an electron and a positron (which is the antiparticle for the electron) are the same. They both have the same charge, although the electron carries what we call a negative charge and the positron carries a positive charge. If either the mass or charge were different, that would be a breakdown of symmetry.
Now, one of the big mysteries of the universe is, why is most of it made of "normal" matter and not antimatter? The only reasonable explanation is that, in the big bang, slightly more matter was produced than antimatter. Most of the matter and antimatter immediately annihilated and became energy, but a small surplus of normal matter was left over, which became the universe we see today.
Prior to 1960, physicists were at a loss to explain how this imbalance came about. However, in 1960, Yoichiro Nambu introduced a description of spontaneous symmetry violation. Nambu's theories now permeate the standard model of particle physics. In 1972, Kobayashi and Maskawa expanded on this idea, explaining how kaons fail to follow the rules of symmetry. This explanation actually predicted the existence of quarks, which were discovered later.
http://www.msnbc.msn.com/id/27057042/
For a quick news blurb level of info go here: Solar wind weakest since beginning of space age - Breitbart.com For an in depth look at the issue go here: Solar System's Protective Shield is Weakening; Solar Wind Velocity at Record Low - Universe Today The Ulysses space probe has been busy. The latest reports show the level of solar wind to be at its lowest level since accurate reports began half a century ago.  Ulysses' orbit 2002-2008 There are some far ranging repercussions to this, some potentially good, some potentially bad. Most not fully understood. - The solar wind creates the Heliosphere. If the solar wind is weaker then the Helioshpere will be smaller and weaker which would allow more cosmic rays into the solar system. All things being equal we want less cosmic rays coming in, but the overall impact is unknown.
- The lessening of the solar wind will cause less drag on satellites and therefore allow them to stay in orbit longer. Weird but true. This reduces cost, potentially by a lot. How much does one more day in orbit save an agency or company with a satellite there? One more hour? Multiplied by how many satellites?
- Rich's plan to create a solar wind powered spaceship has reached a snag.
- ?Global warming? - no idea. My opinion with ZERO data to back it up is that, again everything else being equal, a reduction in solar wind will cause a cooling of some sort on the earth.
 Heliosphere - courtesy wikicommons.
I've read enough Kurzweil by now to never place a limit on the curiosity, ingenuity and persistence of humans. Here is a lecture by Henry Markram talking about the IBM Blue Brain project wherein he describes the remarkable mapping and simulation of the brain that they've been able to achieve recently with the power of supercomputers. This is the direct result of Moore's law and the inexpensiveness of powerful computers brought to bear upon unimaginably complex problems such as unraveling the workings of the brain. What they have been able to do comes down to this. These researchers now have the ability to model tens of thousands simulated neurons at a click of a button where it used to take months to model a neuron by manual process. So what you say, it is still just a model. They are using an iterative model. Comparing how the simulated neurons behave as compared to actual behavior of neurons. And then refining the model to become more accurate. This is a long lecture with a LOT of information within it. Bottom line as far as I can glean: - There has been lots of progress on understanding how the brain works.
- The power of computers will revolutionize how fast this research moves forward (in much the same way mapping the genome went)
- Researchers such as Dr. Markram. are far closer to understanding how the brains wiring works than I had thought.
 Hat Tip: Direct Neural Interface
This is very cool. For the Brain, Remembering Is Like Reliving Scientists have for the first time recorded individual brain cells in the act of summoning a spontaneous memory, revealing not only where a remembered experience is registered but also, in part, how the brain is able to recreate it. For those of you that still doubt that the brain will open up its mysteries to us I need to ask you just one question: When was the last time in the history of mankind that we have been able to listen to individual neurons and accurately determine the cause of their firing? Though it did not address this longer-term process, the new study suggests that at least some of the neurons that fire when a distant memory comes to mind are those that were most active back when it happened, however long ago that was.
Don't fret. The world will actually be consumed by the man made black hole sometime in October. Because although the Large Hadron Collider was switched on last night, it was only practicing. Those crazy physicists were merely circulating a beam. Collisions start in October. So if you have a vacation planned, better get that in over the next few weeks. ? me? I'm more worried about my check engine light in my VW.
Two astrophysicists have estimated the largest possible thing in the universe for there is an upward potential limit due to the age of the universe. A black hole could conceivably have grown to the massive size of a hundred thousand tredagrams*, or 50 Billion suns in size. Based on this self-regulating maximum rate, scientists at the Harvard-Smithsonian Center for Astrophysics, Massachusetts, and the European Southern Observatory, Chile, have calculated an upper limit for these mega-mammoth masses. Fifty billion suns, that's 100 000 000 000 000 000 000 000 000 000 000 000 000 000 kg, otherwise known as "ridiculously stupidly big" and triple the size of the largest observed black hole, OJ 287. That's a big twinky. New Scientist article. *note: As an interesting aside, a tredagram is not even an officially recognized SI prefix of measurement in the metric system. Merely a proposed prefix. This number is sooooo large that we don't even have a clearly defined unit to express it. Here is a pdf, wherein the the new unit of measure is discussed.
Remarkable: Going From One Cell Type to Another Without Using Stem Cells Stem cells "shmem" cells. "This represents a parallel approach for how to make cells in regenerative medicine," said Douglas Melton, co-director of the Harvard Stem Cell Institute. "And now that it's shown that you can turn one of your cells into another, it makes you think of what other cells you'd like to convert." Wow. If I read this correctly then this means you might be able to "cure" diabetes or other diseases dependent on specific cell types. Go read the whole thing.
Get rich quick, in 200 years or less, and explore the solar system while you are at it.
Very interesting article on the small but growing contingent of scientists doing their research out in the open using blogs and wikis to post current ongoing research. Out in the open: Some scientists sharing results "I think the tipping point will come when scientists look at someone next to them using the open system and getting more discoveries, and saying 'I want that.' " And in a more general note the opening up of current papers to free readership for all can do nothing but help in the spreading of knowledge. There are open access journals, such as those published by the Public Library of Science, but scientific journals usually require a paid subscription to get access. But in February, Harvard's largest division, the Faculty of Arts and Science, voted unanimously to make scholarly papers authored by faculty available free in an online repository, which will begin beta-testing this fall. The National Institutes of Health began an open-access policy this year requiring that NIH-funded research be posted online for free, within a year of publication. Soon a growing array of research will be available to the layman to read. For a geek like me that is really cool. The article ends with a concrete example of how this openness can accelerate discoveries. They posted their work online, but also submitted it to a journal over a year ago to be formally presented to the world's scientific community. Meanwhile, their work was incorporated into 18 different projects by other labs. Canton was invited to workshops. Great stuff.
Once again the relentless advance of science continues. You may say neat, but so what. Well if they can produce type O blood in bulk from this process then an emergency blood supply can be produced ON DEMAND. Eliminating shortages as well as the possibility of diseased blood. This is a big deal. While a few red blood cells have been created from embryonic stem cells before, the ACT team is the first to mass-produce them on the scale required for medical use. They also showed that the red cells were capable of carrying oxygen, and that they responded to biological cues in similar fashion to the real thing. I am curious if this has any impact on other treatments such as cancer. What if you could clone someone's blood that has shown resistance to cancer growth? There could be a source of Reverse-Typhoid-Mary blood supply.
The merits of a cold war in space
http://www.livescience.com/culture/080811-brain-evolution.html The conjecture goes like this: because we learned to cook our food, humans were able to get more and better calories than our raw food eating cousins thus spurring a leap of cognitive ability. In most animals, the gut needs a lot of energy to grind out nourishment from food sources. But cooking, by breaking down fibers and making nutrients more readily available, is a way of processing food outside the body. Eating (mostly) cooked meals would have lessened the energy needs of our digestion systems, Khaitovich explained, thereby freeing up calories for our brains. Makes intuitive sense.
There are two primary ancient elixirs of the ancients the elixir of life and an authentic aphrodisiac. We have seen the creation of an authentic aphrodisiac in niagra are we on the verge of seeing the other? Alzeimers has been apparently a cured. The trial was a Phase 2 study, which checks the safety and efficacy of the drug, but if a large-scale Phase 3 trial due next year repeats the findings, the drug could be available for prescribing by 2012. This is remarkable. Patients with the brain disorder had no significant decline in their mental function over a 19-month period.
Remarkable stories as of late. First we have the story coming out of the Fred Hutchinson Center regarding the curing of advanced skin cancer by injecting the patient with his own cloned white blood cells (previously reported on the rivet: here). Now we have research being conducted at Wake Forest University wherein doctors are transfusing a specific type of white blood cell from select donors into patients. They are just beginning early human trials but the test has returned great results in lab mice. A similar treatment using white blood cells from cancer-resistant mice has previously been highly successful, curing 100 percent of lab mice afflicted with advanced malignancies. Link here. In our long march to longer life change will appear to come slowly until all of a sudden it will appear that we are on the other side of the cure. Then we, being the simple humans that we are, will find it unremarkable and move on as if it has always been thus. Will curing cancer be the same as all the rest of accelerating change around us?
21-leaf clover - World record. I'm not sure if this should count though as it was "discovered" by a food researcher in Japan who has been cross-breeding clovers as his hobby for years. He held the previous record at 18 leaves also.
You've heard of SETI@HOME I'm sure. In one sense it has been a resounding success, on the other it has been a abject failure. It has been the most successful grid computing effort on record so far and yet it has essentially stuck a fork in the chance of there being technologically advanced aliens. People are now forced to hypothesize that a more advanced civilization will no longer use radio to communicate. This seems somewhat far fetched to me because of the simplicity of using radio waves for said communication. Current Grid Computing Projects Anyways, here is a list [Grid Computing Projects] of other grid computing efforts you can participate in. Currently this one might provide the most value: Malaria Control Project. Which illustrates the problem of what do you do with all the data that you generate? [update] If climate change floats your boat (it does NOT float mine) there is a distributed computing project for that: [linky] Future Grid Computing Projects The ones that look interesting me: Artificial Intelligence System: This one looks quite cool and is right up my alley. This distributed computing project is part of a larger project that is reverse engineering the brain in order to build a large scale artificial intelligence system. The first of its kind. Because we are a very small company (i.e. 2 people) that is tackling an enormous challenge, we are asking the public at large to get involved by donating computer time. In order to be able to support and accelerate its development we will also pursue an alternative path, through commercialization. Quake Catcher Network: And this one too. This uses the accelerometers built into existing laptops as a distributed network for detecting earthquakes. Flippin' cool! If you have a MacBook, iBook, or Powerbook (purchased 2005 or later), you can join our beta testing laptop network. Click here to learn how. You will soon be able to download free software to turn your Thinkpad and HP laptops into a seismometer. This is an INPUT side to distributed computing. Very, very cool! Those are just a few ideas. Take a look to see if any of the others interest you. Participate if you wish. It's a good use of unused cycles.
Go over here and have a look. Print it out and show your kids.
Orson Scott Card writes a very compelling article that navigates around the issue of intelligent design, Darwin's theory of evolution, scientific dogma and global warming in quite a persuasive manner. His premise comes down to scientific dogma stifles true science. Even science that seems "proven" isn't, or it no longer falls under the title "science". He makes the point that intelligent design is HorseSwaggle, but uses it as a device to talk about the science community. When it starts censoring new thought and stops the questioning of theories then it is no longer part of science. I am a skeptic of the global warming hysteria currently gripping the media and political class and eventually he addresses that as well. Faith in global warming is an orthodox religion, and anyone who questions it is being treated like a heretic, while fakery "in a good cause" is tolerated. The result? Science is over to the degree that the global warming orthodoxy succeed in silencing "dissenters" (i.e., actual science). It's all a matter of questioning assumptions. The biggest assumption right now is that humans are causing global warming. Scientists should be taking this on as the "null hypothesis" and attempting to debunk it. But they aren't. They are accepting it as de riguer en masse and moving on to the questions of what to do about it... To me this is a big problem. Because all the potential "solutions" are very drastic to society and how humans are developing better lives for more and more people across the world. If it isn't a problem then we will be doing gargantuan harm to billions of people. Do we want to do that right now? ...or do we want to make sure? Me? I think I can wait a bit to be sure before I reduce the world GDP by 2% or more (and you thought the current slowdown is scary.) Anyway, I'll get off my soapbox. Seriously go read the article. It's quite good.
Go Download It! Just so you know, you need a beefy machine. show requirements - PC with Intel Core 2 Duo processor with 2 gigahertz (GHz) or faster, recommended
- 1 gigabyte (GB) of RAM; 2 GB RAM recommended
- 3D accelerated card with 128 megabytes (MB) RAM; discrete graphics card with dedicated 256-MB VRAM recommended for higher performance
- 1 GB of available hard disk space; 10 GB recommended for off-line features and higher performance browsing
- XGA (1024 x 768) or higher resolution monitor
- Microsoft Mouse or compatible pointing and scrolling device
- Microsoft® XP SP2 (minimum), Windows® Vista® (recommended)
- Microsoft® DirectX® version 9.0c or later and .NET Framework 2.0 or later
- Required for some features; Internet connection at 56 Kbps or higher through either an Internet service provider (ISP) or a network. Internet access might require a separate fee to an ISP; local or long-distance telephone charges might also apply
hide requirements But OMG is it cool. I'll play with it over the next day or two and let you all know what I think. But here are some brief observations. 1. it's REAL time. The planets move. 2. It's very very smooth. 3. The UI is incredibly intuitive. Here is a little guided tour for you of a simple zoom in to Saturn. We start out fully zoomed out and looking at the constellation Leo in the center. In we go, we see Regulus come into focus, one of the key stars of Leo. 37 Leonis is the second brightest in the middle top third of the picture. Further in still too close now and Regulus has moved off the screen. 37 Leonis is just out of the picture above the center. And now you can make out Saturn finally. And there she is.  This little experience in and of itself was enjoyable. This makes me want to go out and buy a machine for this software only. This is a compelling reason to upgrade your system.
So I have kids and I am constantly looking for fun, educational, entertaining, games for them to play. I like discovering open source free applications that satisfy this most of all. Some examples of great programs: tux paint and tux typing. Phun is different. Where those two programs excel in teaching kids, Phun is just fun. It's interactive in a way that not many programs are. It actually has the playability that feels much like an RTS. It does what you make it do now. You add something and the environment acts upon it. Watch this video. And it's a toy...except it isn't: Radial engine:
Gears: It's a remarkable achievement. One big benefit I see in Phun over the other kid applications I've found is that Phun uses an almost standard application user interface. The user needs to navigate menus and toolbars and context menus. The other kid apps focus on learning something or doing something. Phun does that also, but because of its complexity the standard UI is leveraged as the simplest solution. This is a great side benefit. Kids get exposure to the standard UI and how applications work. This has direct impact on any and all other applications they might encounter. If you have kids go get this program now. Install it, run it and watch your kids be sucked in for hours. Heck go do it yourself. It's really addicting.
We gotta keep this telescope operational: Hubble discovers 67 new gravitationally lensed galaxies What is gravitational lensing? Gravitational lensing occurs when light travelling toward us from a distant galaxy is magnified and distorted as it encounters a massive object between the galaxy and us. These gravitational lenses often allow astronomers to peer much farther back into the early universe than they would normally be able to do. Here is a cool video of an Einstein Ring. An Einstein ring is a complete circle image of a background galaxy, which is formed when the background galaxy, a massive, foreground galaxy, and the Hubble Space Telescope are all aligned perfectly. Therein creating a complete circle lense effect. So pretty pictures are nice, but what impact do these discoveries have on astro-physics? Well read on dear surfer, read on. ...they can be used to create a census of galaxy masses in the universe to test the predictions of cosmological models. Basically, since we understand how gravity works here, and we can get estimates of galaxy size out there, we can then compare and contrast and see if gravity remains constant from one side of the visible universe to the other.
As we relentlessly march into the future scientists continue to discover stuff about stuff. And you know what we don't forget the stuff we already knew about stuff. That is the law of accelerating change in a nutshell. Some of the stuff we learn about stuff we had to already know about some other stuff before we could figure out the new stuff about stuff. You follow? Now some fairly bright scientists at Harvard have come across a technique for "starving" cancer cells and thereby curbing their growth. When the researchers forced cancer cells to switch to the other form of pyruvate kinase in the lab by knocking out production of PKM2, the cells' growth was curbed. This is a novel technique that science had to first understand the process behind cancers explosive growth before the solution could even be looked for. This is not a treatment yet, but could open up new avenues to combat the disease[s].
Mind-Reading Game Headset to Hit Market Brain computer interface is coming. And it's coming fast. There are several companies set to hit the market with products over the next couple of years: Emotiv and NeuroSky. Both of these products are focusing on the gaming market segment to begin with. There they have a ready customer, willing to spend money on accessories, looking for new gadgets and typically younger, typically male. If done correctly the experience gained from entering that market could lay the groundwork for many other segments: quadraplegics, fighter pilots, surgeons, artists, equipment operators, data/security experts. Eventually how about an everyday person in a wired world...
Eyes on prize: Visionary device gives hope Once again our good friend accelerating change comes around to help us out. This near achievement is only possible because of all the surrounding improvements and miniaturization in computers and silicon chip construction in general. “There has been this explosion of interest in this field because basically the technology in the last 20 years has become miniaturized enough and sophisticated enough so that for the first time we can imagine building something small enough to put in the eye,” said Dr. Joseph Rizzo III, who founded the project in the late 1980s and co-directs the 36-member team. What will be next.
The paralysed finger Try this...it is impossible to lift your ring finger. Essentially your index finger and pinky have independent extensor tendons whereas your middle and ring finger share one. The index and small finger each have independent extension function through the extensor indicis proprius and extensor digiti minimi. There you go, now you know. Maybe you can win some bets at a bar now...
The much maligned International Space Station keeps moving forward oblivious to its critics. Yesterday the Shuttle Atlantis blasted off with the Columbus Module aboard. The Columbus module is another science module with the ability to hold 10 racks of scientific experiments. It is growing and finally becoming a significant platform in space. I understand the critics that deride its lack of strategic space location. Its in-between-ness that doesn't help us much to get anywhere else in the solar system. I understand the critics that bring up the ROI on a manned space station and compare it to one of our probe missions like the Mars Rovers. I understand all that. But I believe it provides other benefits: - It teaches us how to construct complicated things in space. What we are learning from the ISS will be crucial for ANY construction we do in space and if you think there won't be much call for that...well I disagree with you.
This has been done over a period of years. From a broad base of contributors spanning continents, languages, governments. It's remarkable.
- We continue to learn how to make livable habitats for humans in space. We need to have this sussed if we are to do any sort of long range trips in the future - Mars anyone?
- There ARE science experiments that can only be performed by humans in space. The trick is identifying them and prioritizing them.
- It is a manned presence in space. Do you realize if things just stumble along like this for another 10 years or so that we might enter an era where mankind will always have a representative in space. And in my opinion there will be increasing numbers of extra-terran humans as the years go on. Too many people want to explore "out there".
I also think it is flippin' cool. And in the grand scheme of government and society expenditures the entire space programs of all the world are hobbies. NASA has had a 12-15 billion dollar budget since the 1980's. Through all that inflationary time, where the value of its dollars has steadily decreased, it has maintained the program and accomplished significant things. It will be fascinating to see if the burgeoning commercial space programs will interface with the existing governmental ones. Stay tuned... Update: The final volume of the ISS is going to be approximately 1000 cubic meters. It is more than half done but for the sake of argument let's say there is 500 cubic meters of livable volume in orbit right now. Well according to the awesome intertubes a standard 40 foot shipping container has 67.5 cubic meters of volume inside it. That means there are the equivalent of 7.5 shipping containers of habitat up there right now and in the end there will be approximately 15 shipping containers of habitable volume (a little less actually but close enough). Now that is amazing. The space boys and girls aren't just whistling Dixie.
2007 WD5 Mars Collision Effectively Ruled Out - Impact Odds now 1 in 10,000 Looks like it will miss by at least 4000 kilometers and most likely by somewhere more in the neighborhood of 26,000 kilometers. Oh well.
Extraordinary! And not just hearts: The process, called whole organ recellularization, can be done "with virtually any organ," Taylor says. Researchers create a new heart in the lab Someday, doctors may routinely extract cells from heart failure patients and use them to reseed a new organ from a cadaver-derived ECM. What types of cells those would be isn't known yet. What we are looking at is heart replacement with a NEW heart from your own cells. No rejection medicine required. Gimme new lungs too, oh and how about kidneys! Wow!
I know you've been curious. Well here is a fascinating article that talks about how huge Baleen [called Rorqual] Whales feed. I mean we all know that they open their mouths and let the water flow in and then squeeze it out through the baleen and trap the krill. But the latest research fills in the details. Essentially they cruise along at 600 feet below the surface and then open their mouth, dropping their jaw perpendicular to their body. This causes their whole mouth to act like a giant parachute and stops the forward motion of the whale completely. What the whale does next came as a complete surprise to the scientists. “It was still swimming, but it was slowing down really fast,” Mr. Goldbogen said. Even as the whale pumps its powerful tail, it comes to a compete stop in three seconds. And the amount of water that they capture in their mouth during a gulp is truly gargantuan. Mr. Goldbogen and his colleagues calculate that in just three seconds, the mouth of a 60-foot fin whale fills with more than 18,000 gallons of water. That’s the same volume as a school bus, and weighs more than the whale itself. Go read the whole article. It's a fascinating read.
Accelerating change is going on all around us. We see it in entertainment from computer games to movies. We see it in telephones as they keep getting smaller and more feature rich. We see it in cameras and music players and personal GPS devices. Etcetera, etcetera, etcetera. All of this creeps into our lives and becomes ubiquitous. The changes quickly becomes invisible, expected and, in a weird sort of way, un-important. But accelerating change is also affecting the sciences. For example the hunt for extra-solar planets. The first one discovered was in 1991. Since then there has been a rapid pace of discovery. The bulk of the discoveries essentially done by inference: careful detection of the wobbling of the star around which the planet[s] orbit.  So the point here is that before 1991 we had NO evidence of planets orbiting other stars. In theory we were 100% sure (or so close as to make no difference) that most stars had some planets, but we had no direct evidence. Now there has been over 250 planets identified. But wait that's not all! N ow there is a new technology under development by the Lyot Project, it's goal to create the necessary instrument and associated software to remove starlight from images thus allowing the much fainter planets to be viewed directly. Astronomers will no longer need rely on inference to discover new planets. This would be a remarkable achievement and would allow for a much greater number of planets to be discovered. It would probably also allow for the discovery of Earth like planets and the reading of spectrums from the planets themselves. What would the reactions be if we found a planet with a spectral analysis that matched Earth? Orbit, temperature, water, oxygen?... Would that spur some research into a viable star probe? Just asking... Accelerating change is cool. Sites of interest:
Beautiful. While there are plenty of pie in the sky nano-technology dreams out there: space elevator ribbon, artery cleansing robots, oxygen increasing blood. But in reality those are still far off. What we will end up seeing in our day to day lives will be more mundane applications that appear to have marginal impact on change, but over the long term may have as much impact as the grandiose ideas. For example here: Nano-layered plastic sheet is strong as steel This stuff could be used in a lot of applications ranging from grocery bags to space vehicle linings. It will all depend on how efficient the process can become. It sounds like the process uses simple materials and that there is potential for big automation. It will be very interesting to see what other "mundane" nano-technology innovations come out over the next several years.
Paralyzed man's mind is 'read' Eric Ramsay can only "speak" by moving his eyes. Now scientists and doctors are on the verge of being able to interpret his brain signals as speach... "We have been moving towards decoding primitive vocabulary for a while now. But this is certainly an interesting development, although invasive techniques, where something is out in someone's brain, such as these will of course carry risks." This is remarkable. The forefront of Brain Computer Interface. This is not a completed interface but the doctors and scientists involved believe they are getting close.
Update: Garrett Lisi is called on the carpet by a fellow physicist Luboš Motl for shoddy work. Debunked? Why? Well, we have seen that a completely continuous spectrum of people between serious physicists and manifest crackpots has been created and the recent fashionable trend is to accept an ever broader set of passionate amateurs and undereducated, intellectually challenged loons into the physics circles. [emphasis mine] But the article is filled with vitriol and me being a layman when it comes to physics of this depth can't make a clear call as of right now as to what is true or false. Anyways, I'll fall back on the truism, if it looks too good to be true then it probably is. String theory has years of blackboard chalk and millions of lines of code behind it trying to disprove it and it hasn't been brought down yet. Hadron collider, tell us what is the truth. Posted previously: Garrett Lisi - Surfer...Snowboarder...Supra-Genius! Surfer dude stuns physicists with theory of everything  Yes that is Garrett in the middle also. Einstein for the 21st Century. From what I gather there has been a breakthrough over the past several years with regards to an elegant geometric pattern named E8. It was first discovered in 1887 but only completely understood this year by mathematicians. To solve that problem it took a huge effort. Mathematicians are known for their solitary style of working, but the combined assault on what is described as "one of the largest and most complicated structures in mathematics" required the effort of 18 mathematicians from America and Europe for an intensive four-year collaboration. Once the structure of E8 was understood, Garrett Lisi had a basis upon which to build his work. In fact the article from last March regarding the understanding of E8 Symmetry has a lot of foreshadowing for the discoveries that Garrett has gone on to submit. "This is an impressive achievement," said Hermann Nicolai, Director of the Albert Einstein Institute in Potsdam, Germany. "While mathematicians have known for a long time about the beauty and the uniqueness of E8, we physicists have come to appreciate its exceptional role only more recently - yet, in our attempts to unify gravity with the other fundamental forces into a consistent theory of quantum gravity, we now encounter it at almost every corner," he said, referring to efforts to combine the theory of the very big (general relativity) with the very small (quantum mechanics). "Thus, understanding the inner workings of E8 is not only a great advance for pure mathematics, but may also help physicists in their quest for a unified theory." So perhaps the discovery that Garrett made would have been reached soon by other physicists. But credit needs to be placed where it is due. For Garrett has a great mind that was able to see a potential answer to one of the great remaining questions in physics and mathematics.
So interplanetary travel...cool yes? How do we do it? Shane Ross gives a compelling speech about the use of LaGrange points as entry and exit points into orbits of planetary bodies. The Interplanetary Transport Network Essentially there are low energy paths that lead from Earth orbit to L1 or L2. There are then low energy paths that lead from L1 to the Earth-Sun LaGrange point called E1 or E2. And from there more low energy paths to the LaGrange points around other bodies in the solar system. He uses the Genesis project as an example of very low energy orbits. The Genesis project used these low energy pathways to make its way from Earth to L2 and from there to E2 where it stayed and sampled the solar winds for 2 years. It then used the reverse of those paths to make its way back to Earth again. Genesis was able to do all this travel while using "...five hundredths of 1% of the fuel that it takes to get a rocket into Earth orbit." That is remarkable. The major point of this whole speech was summed up early: Once you reach Earth's orbit you are halfway to anywhere. Here is a little lighthearted graphic from the speech defining the low energy pathways as a Metro map. Transit stop Professor Ross argues that the Lunar L1 location become a gateway station. It's the best location for a manned space station because: travel time is a matter of days from the Earth, launching craft and maintaining craft from that location is cheap, launching from L1 up to E1 or E2 is cheap and therefore exiting the local Earth system to head to other planets is cheap as well. It becomes the closest rest stop on the interplanetary highway. Can we get into orbit cheaply? So then the remaining hurdle is getting into Earth orbit. If we can make that cheap then the entire process of interplanetary travel becomes inexpensive. What technology are we working on right now that might lower the cost of getting payloads into orbit? Space Elevator. Does it feel like we are on the cusp of a convergence here? If we are able to tie these two sciences together, the engineering feat of a space elevator with the comprehensive knowledge of how to navigate the solar system's "currents", what will the bounds of our exploration be? Cheap Planetary Travel It would no longer require huge chemical rockets to get from Earth to Mars or Jupiter or anywhere for that matter. It would be like nudging a stick out into a stream and watching it float on down to the next stop. Only you would be able to nudge the stick back upstream as well, whenever you wanted. Download and watch the video it's compelling.
Quantum chip rides on superconducting bus The connection of two Qubits on a chip for the first time. This is a crucial first step, a proof of concept, that will lead to true quantum computers. In effect, says Johannes Majer, a member of the Yale team, the researchers have created "a quantum bus". A bus is used in conventional computers as a conduit for information among the various components – but its quantum chip equivalent has never been made before. With the predictions for the end of Moore's law I refer you back to Ray Kurzweil's great essay on accelerating change that stipulated the doubling of computing power was not bound to the integrated chip. The phenomena both preceded the integrated chip and will in all likelihood continue after the silicon chip is no longer viable. The creation of a working quantum computer might be as momentous an event as the creation of the transistor. History will of course judge.
Just an example of accelerating change. There were rooms and devices in history that could be categorized as planetariums dating back to the 13th century, but the first true planetarium was created in Munich in 1920. [ref. linky] [wikipedia] That planetarium used a metal dome with holes poked in it to project the lights onto a domed ceiling. This technology remained largely unchanged for 60 years. Since then we have seen rapid change. With computer processing power increasing continuously it is now possible to provide dynamic content up onto the dome. I went to a local planetarium last year and the experience was more like a trip through space than a lecture from an instructor. It was remarkable. But it doesn't stop there. We now have sophisticated programs available to everyone for free that exceed the capabilities of ANY planetarium that was built before the year 2000. Stellarium [linky] is only the most sophisticated example. The power of a full planetarium placed in your hands for free. Accelerating Change: This is only one trivial example of accelerating change in our lives. We have the capabilities at our fingertips that only large institutions have had in the past. And even those institutions, whether business or government, have only had THOSE capabilities for a hundred years or so, before that essentially nobody could do these things. And we take it all for granted. We shouldn't. We live in an age of miracles. It is not an age of once in a blue moon someone gets healed by some mysterious means or someone walks on water or something trivial like that. It is an age where the miracles are so common and ubiquitous that they have become mundane.
Not sure about the net balance of energy in this reaction but he is igniting saltwater with radio waves. The question is how much energy doe sit take to create the radio waves to begin with?
So this comes up in sci fi a lot, beginning with "2001: a space Odyssey". In that movie Dave has to jump from the pod to the emergency airlock without a helmet.
He does it and it takes some seconds, approximately 10 or so..
It happens in the Hitchhikers Guide to the Galaxy wherein Arthur and Ford are thrown off the Vogon Constructor Fleet ship and are rescue 29 seconds later by Zaphod in the Heart of Gold.
Total Recall had it where Quaid and Melina were exposed to the partial atmoshpere of Mars for awhile until the atmosphere kicked in.
It's in the new movie Sunshine too. So how long can a human actually survive in the vacuum of space?
Turns out we actually have an incident, where the astronaut survived.
At NASA's Manned Spacecraft Center (now renamed Johnson
Space Center) we had a test subject accidentally exposed to a near
vacuum (less than 1 psi) in an incident involving a leaking space suit
in a vacuum chamber back in '65. He remained conscious for about 14
seconds, which is about the time it takes for O2 deprived blood to go
from the lungs to the brain. The suit probably did not reach a hard
vacuum, and we began repressurizing the chamber within 15 seconds.
The subject regained consciousness at around 15,000 feet equivalent
altitude. The subject later reported that he could feel and hear the air
leaking out, and his last conscious memory was of the water on his
tongue beginning to boil.
[linky]
Bottom line: you have about 15 seconds until you pass out...and that will result in you...um...dying.
It's a nasty ride, you're blood boils, your skin blisters, you lungs might explode if you try to hold your breath...icky, icky.
Here is a great article about a person with lifelong hearing loss. Through his life he has repeatedly purchased and used hearing aids and been uniformly dissapointed. Each one has been little more than an amplifier of sound, which doesn't really solve the problem.
Recently he got a modern cutting edge model.
And then humming.
And I asked, what’s that?
I turned to the audiologist who said, the humming is the light fixtures overhead. I looked up and it occurred to me that the world was opening up in waves around me within this tiny office. I could hear the secretary a room away on the phone and the printer printing and a phone ringing behind me, and I knew right were it was.
Wow! Right now I hear the refigerator running on the other side of the office. And I can make out the highway sounds in the background...just. This guy has NEVER heard the background sounds of life. Until now.
Go read the whole thing.
So I've talked about World Wind, [linky] which comes with an interface for several planets and the moon. Well now Google has gotten into the act and created a moon map. [linky]
Google goes one better by highlighting the locations of the moon landings.
The Drake Equation is the equation formulated by Frank Drake. It is a speculative equation that is used to attempt to estimate the number of civilizations alive and kicking in the galaxy today. It is stated as such.
N = R* × fp × ne × fl × fi × fc × L
So why are you bringing this up Greg? Well I'm glad you asked. Astronomers have been using highly specialized techniques lately to detect planets around nearby stars, in general by detecting the wobble in the star's path caused by massive close orbiting planets.
So historically we have been able to Estimate R*, which is the estimate of the number of stars in the Milky Way Galaxy.
And recently, with our new capabilities, we have been learning about how our estimates play out with fp, which is the estimate for the fraction of the stars that have planets around them.
But the rest of the variables have been wild ass guesses.
Now Astronomers have spotted a potential ne data point. ne is the number of planets per star that might sustain life. [linky] They believe they have spotted a candidate planet. Now this in its own right doesn't tell us much. What it does reveal is the growing capability of astronomers to detect smaller and smaller planets.
"On the treasure map of the universe, one would be tempted to mark this planet with an X," Delfosse said.
As the technologies and skill of the astronomers continue to increase, we may very well nail down the front end of the Drake equation. We may statistically "know" three of the seven variables.
If we can refine our techniques and increase the power of our telescopes even further we might be able to answer fl which is the fraction of planets where life evolves. Spectroscopic analysis comes to mind.
With knowledge of four of the seven Drake equation variables we will have a much better grasp of our standing in the universe.
Beyond that we really need a way to communicate with the intelligent life supposed in fi and fc. But still...
Update: Let's hear what Carl Sagan has to say about it:
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