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thinkahol *

YouTube - The Known Universe by AMNH - 0 views

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    The Known Universe takes viewers from the Himalayas through our atmosphere and the inky black of space to the afterglow of the Big Bang. Every star, planet, and quasar seen in the film is possible because of the world's most complete four-dimensional map of the universe, the Digital Universe Atlas that is maintained and updated by astrophysicists at the American Museum of Natural History. The new film, created by the Museum,  is part of an exhibition, Visions of the Cosmos: From the Milky Ocean to an Evolving Universe, at the Rubin Museum of Art in Manhattan through May 2010.     Data: Digital Universe, American Museum of Natural History  http://www.haydenplanetarium.org/universe/    Visualization Software:  Uniview by SCISS    Director: Carter Emmart  Curator: Ben R. Oppenheimer  Producer: Michael Hoffman  Executive Producer: Ro Kinzler  Co-Executive Producer: Martin Brauen  Manager, Digital Universe Atlas: Brian Abbott    Music: Suke Cerulo    For more information visit http://www.amnh.org
Ivan Pavlov

Did a hyper-black hole spawn the Universe? : Nature News & Comment - 0 views

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    In our Universe, a black hole is bounded by a spherical surface called an event horizon. Whereas in ordinary three-dimensional space it takes a two-dimensional object (a surface) to create a boundary inside a black hole, in the bulk universe the event horizon of a 4D black hole would be a 3D object - a shape called a hypersphere. When Afshordi's team modelled the death of a 4D star, they found that the ejected material would form a 3D brane surrounding that 3D event horizon, and slowly expand. The authors postulate that the 3D Universe we live in might be just such a brane - and that we detect the brane's growth as cosmic expansion. "Astronomers measured that expansion and extrapolated back that the Universe must have begun with a Big Bang - but that is just a mirage," says Afshordi.
Skeptical Debunker

Astronomically large lenses measure the age and size of the universe (w/ Video) - 0 views

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    Using entire galaxies as lenses to look at other galaxies, researchers have a newly precise way to measure the size and age of the universe and how rapidly it is expanding, on a par with other techniques. The measurement determines a value for the Hubble constant, which indicates the size of the universe, and confirms the age of the universe as 13.75 billion years old, within 170 million years. The results also confirm the strength of dark energy, responsible for accelerating the expansion of the universe.
thinkahol *

Astronomers discover complex organic matter in the universe | KurzweilAI - 1 views

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    Organic compounds of unexpected complexity exist throughout the universe, Prof. Sun Kwok and Dr. Yong Zhang of the University of Hong Kong have discovered, suggesting that complex organic compounds can be synthesized in space even when no life forms are present. The organic substance they found contains a mixture of aromatic (ring-like) and aliphatic (chain-like) components that are so complex, their chemical structures resemble those of coal and petroleum. Since coal and oil are remnants of ancient life, this type of organic matter was thought to arise only from living organisms. Unidentified radiation from the universe The researchers investigated an unsolved phenomenon: a set of infrared emissions detected in stars, interstellar space, and galaxies, known as "Unidentified Infrared Emission features." From observations taken by the Infrared Space Observatory and the Spitzer Space Telescope, Kwok and Zhang showed that the astronomical spectra have chemical structures that are much more complex that previously thought. By analyzing spectra of star dust formed in exploding stars called novae, they show that stars are making these complex organic compounds on extremely short time scales of weeks, and ejecting it into the general interstellar space, the region between stars. "Our work has shown that stars have no problem making complex organic compounds under near-vacuum conditions," says Kwok. "Theoretically, this is impossible, but observationally we can see it happening." Most interestingly, this organic star dust is similar in structure to complex organic compounds found in meteorites. Since meteorites are remnants of the early Solar System, the findings raise the possibility that stars enriched the early Solar System with organic compounds. The early Earth was subjected to severe bombardments by comets and asteroids, which potentially could have carried organic star dust. Whether these delivered organic compounds played any role in the development of l
Charles Daney

Dark energy may disguise shape of universe - New Scientist - 0 views

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    Exquisite measurements of the radiation left over from the big bang led us to believe that we could work out the curvature of the universe to within a few per cent. In doing so, we have determined how much energy the universe contains and that most of it is in an exotic form called dark energy, which is driving the expansion of space. However, recent discoveries have left me wondering if these claims were premature. As we learn more about dark energy and its effect on the expansion of space and time, we find that dark energy and the shape, or geometry, of the universe are worryingly intertwined.
Janos Haits

DiscOU: Discovering Open University Content from Other Online Resources - 0 views

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    DiscOU is a resources discovery engine relying on a semantic index of Open University Open Content. It semantically analyses the content of an online resource, and matches it by similarity to other existing Open University content to retrieve the most relevant pieces. It currently works with BBC programme pages, as demonstrated in the video below, as well as from text entered/pasted in the DiscOU alfa interface.
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    DiscOU is a resources discovery engine relying on a semantic index of Open University Open Content. It semantically analyses the content of an online resource, and matches it by similarity to other existing Open University content to retrieve the most relevant pieces. It currently works with BBC programme pages, as demonstrated in the video below, as well as from text entered/pasted in the DiscOU alfa interface.
Erich Feldmeier

Excellence by Nonsense: The Competition for Publications in Modern Science - 0 views

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    "A second phenomenon which did a lot of harm to the European universities, was the lasting glorification of the American higher education system. Many politicians, but also scientists themselves, see this system as a permanent source of excellence and success without-as US scientist Martin Trow (1997) writes-getting the general picture of the American higher education system. Attention is directed exclusively at Harvard, Princeton, Yale, MIT, and other Ivy-League universities, which make up only a small percentage of the university landscape in the US. In this euphoria, it is intentionally overlooked that the majority of colleges and universities displays an intellectually modest standard and hardly contributes to academic progress. Much of what we celebrate as "globalization" and "adjustment to international standards" is in reality the adjustment to US-American provincialism (Fröhlich interview)."
Janos Haits

Online Universities | Accredited Online University Guide - 0 views

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    Online Universities, an online resource for students interested in going to college online. OnlineUniversities.com's goal is to assist students in finding the best online university that fits your needs and demands as a student.
Walid Damouny

Primordial weirdness: Did the early universe have 1 dimension? - 1 views

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    "(PhysOrg.com) -- Did the early universe have just one spatial dimension? That's the mind-boggling concept at the heart of a theory that University at Buffalo physicist Dejan Stojkovic and colleagues proposed in 2010."
Janos Haits

Oxford University Press - homepage - 0 views

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    Oxford University Press is a department of the University of Oxford. It furthers the University's objective of excellence in research, scholarship, and education by publishing worldwide.
Janos Haits

An Atlas of The Universe - 0 views

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    This web page is designed to give everyone an idea of what our universe actually looks like. There are nine main maps on this web page, each one approximately ten times the scale of the previous one. The first map shows the nearest stars and then the other maps slowly expand out until we have reached the scale of the entire visible universe.
thinkahol *

Natural brain state is primed to learn - life - 19 August 2011 - New Scientist - 0 views

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    Apply the electrodes... Externally modulating the brain's activity can boost its performance. The easiest way to manipulate the brain is through transcranial direct current stimulation (tDCS), which involves applying electrodes directly to the head to influence neuron activity with an electric current. Roi Cohen Kadosh's team at the University of Oxford showed last year that targeting tDCS at the brain's right parietal lobe can boost a person's arithmetic ability - the effects were still apparent six months after the tDCS session (newscientist.com/article/dn19679). More recently, Richard Chi and Allan Snyder at the University of Sydney, Australia, demonstrated that tDCS can improve a person's insight. The pair applied tDCS to volunteers' anterior frontal lobes - regions known to play a role in how we perceive the world - and found the participants were three times as likely as normal to complete a problem-solving task (newscientist.com/article/dn20080). Brain stimulation can also boost a person's learning abilities, according to Agnes Flöel's team at the University of Münster in Germany. Twenty minutes of tDCS to a part of the brain called the left perisylvian area was enough to speed up and improve language learning in a group of 19 volunteers (Journal of Cognitive Neuroscience, DOI: 10.1162/jocn.2008.20098). Using the same technique to stimulate the brain's motor cortex, meanwhile, can enhance a person's ability to learn a movement-based skill (Proceedings of the National Academy of Sciences, DOI: 10.1073/pnas.0805413106).
Charles Daney

How does your galaxy grow? - New Scientist - 0 views

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    Together with ever-improving observations of the early universe, grand simulations are beginning to paint a single, unifying picture of why the universe looks as it does. At its heart is an almost invisible scaffold of dark matter and cold gas on which the visible constituents of the universe hang - a structure known as the cosmic web.
Janos Haits

ADAPT: The Global Centre of Excellence for Digital Content and Media Innovation - 0 views

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    "ADAPT is a dynamic research centre that combines the world-class expertise of researchers at four universities (Trinity College Dublin, Dublin City University, University College Dublin and Dublin Institute of Technology) with that of its industry partners to produce ground-breaking digital content innovations"
Janos Haits

spaceengine - Home page - 0 views

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    SpaceEngine - is a free space simulation software that lets you explore the universe in three dimensions, starting from planet Earth to the most distant galaxies. Areas of the known universe are represented using actual astronomical data, while regions uncharted by human astronomy are generated procedurally. Millions of galaxies, trillions of stars, countless planets!
Erich Feldmeier

George Mashour, J. Borjigin: Electrical signatures of consciousness in the dying brain ... - 0 views

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    University of Michigan researchers George Mashour, M.D., Ph.D., and Jimo Borjigin, Ph.D., provide the first scientific framework for near-death experiences. "The "near-death experience" reported by cardiac arrest survivors worldwide may be grounded in science, according to research at the University of Michigan Health System. Whether and how the dying brain is capable of generating conscious activity has been vigorously debated"
Janos Haits

University of Wisconsin Digital Collections - 0 views

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    "The University of Wisconsin Digital Collections Center works to create and provide free access to digital resources that support the teaching and research needs of the UW community, uniquely document the university and State of Wisconsin, and possess broad research value. Read More"
thinkahol *

Fermilab is Building a 'Holometer' to Determine Once and For All Whether Reality Is Jus... - 0 views

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    Researchers at Fermilab are building a "holometer" so they can disprove everything you thought you knew about the universe. More specifically, they are trying to either prove or disprove the somewhat mind-bending notion that the third dimension doesn't exist at all, and that the 3-D universe we think we live in is nothing more than a hologram. To do so, they are building the most precise clock ever created.
Skeptical Debunker

Exotic Antimatter Created on Earth - Yahoo! News - 0 views

  • Among the many particles that resulted from this crash were bizarre objects called anti-hypertritons. Not only are these things antimatter, but they're also what's called strange matter. Where normal atomic nuclei are made of protons and neutrons (which are made of "up" quarks and "down" quarks), strange nuclei also have so-called Lambda particles that contain another flavor of quark called "strange" as well. These Lambda particles orbit around the protons and neutrons. If all that is a little much to straighten out, just think of anti-hypertritons as several kinds of weird. Though they normally don't exist on Earth, these particles may be hiding in the universe in very hot, dense places like the centers of some stars, and most likely were around when the universe was extremely young and energetic, and all the matter was packed into a very small, sweltering space. "This is the first time they've ever been created in a laboratory or a situation where they can be studied," said researcher Carl Gagliardi of Texas A&M University. "We don't have anti-nuclei sitting around on a shelf that we can use to put anti-strangeness into. Only a few anti-nuclei have been observed so far." These particles weren't around for too long, though – in fact, they didn't last long enough to collide with normal matter and annihilate. Instead they just decayed after a fraction of a billionth of a second. "That sounds like a really short time, but in fact on the nuclear clock it's actually a long time," Gagliardi told SPACE.com. "In that fraction of a billionth of a second that Lambda particle has already gone around the nucleus as many times as the Earth has gone around the sun since the solar system was created."
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    Scientists have created a never-before seen type of exotic matter that is thought to have been present at the earliest stages of the universe, right after the Big Bang. The new matter is a particularly weird form of antimatter, which is like a mirror-image of regular matter. Every normal particle is thought to have an antimatter partner, and if the two come into contact, they annihilate. The recent feat of matter-tinkering was accomplished by smashing charged gold atoms at each other at super-high speeds in a particle accelerator called the Relativistic Heavy Ion Collider at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory in Upton, N.Y.
Janos Haits

Universal Digital Library: Million Book Collection , hosted by Carnegie Mellon University - 0 views

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    The Universal Digital Library. Million Book Collection   
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