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The Awesome Science Thread (pg. 31)
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View this Thread in Original format
| Lagrangian |
You will enjoy this.
http://astro.cornell.edu/courses
I am almost convinced I have been receiving packets of information at night while stargazing. The data comes in the form of 'sensory cues', the receiver is almost convinced the information is of his own creation as it is processed so quickly . The receiver is almost unaware that he is asleep, until he awakens.
http://www.cfa.harvard.edu/webscope.../pdfs/starT.pdf
Lonestar In the Sky... |
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| Lagrangian |
New, very sensitive data were taken in April 2013 with NACO and SINFONI at the ESO VLT . The 'head' of G2 continues to be stretched ever further along the orbit in position-velocity space. A fraction of its emission appears to be already emerging on the blue-shifted side of the orbit, past pericenter approach.
Ionized gas in the head is now stretched over more than 15,000 Schwarzschild radii RS around the pericenter of the orbit, at ~ 2000 RS ~ 20 light hours from the black hole. The pericenter passage of G2 will be a process stretching over a period of at least one year. The Brackett-{\gamma} luminosity of the head has been constant over the past 9 years, to within +- 25%, as have the line ratios Brackett-{\gamma} / Paschen-{\alpha} and Brackett-{\gamma} / Helium-I. We do not see any significant evidence for deviations of G2's dynamical evolution, due to hydrodynamical interactions with the hot gas around the black hole, from a ballistic orbit of an initially compact cloud with moderate velocity dispersion. The constant luminosity and the increasingly stretched appearance of the head of G2 in the position-velocity plane, without a central peak, is not consistent with several proposed models with continuous gas release from an initially bound zone around a faint star on the same orbit as G2.
http://arxiv.org/abs/1306.1374 |
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| OrangestO |
| How bout you resize images before posting, breath. |
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| Lagrangian |
Hunting from a distance of 27,000 light-years, astronomers have discovered an unusual carbon-based molecule — one with a branched structure — contained within a giant gas cloud in interstellar space. Like finding a molecular needle in a cosmic haystack, astronomers have detected radio waves emitted by isopropyl cyanide. The discovery suggests that the complex molecules needed for life may have their origins in interstellar space.
Using the Atacama Large Millimeter/submillimeter Array (ALMA), researchers studied the gaseous star-forming region Sagittarius B2.
Organic molecules usually found in these star-forming regions consist of a single “backbone” of carbon atoms arranged in a straight chain. But the carbon structure of isopropyl cyanide branches off, making it the first interstellar detection of such a molecule, said Rob Garrod from Cornell University in Ithaca, New York.
http://www.astronomy.com/news/2014/...es-life-origins |
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| djshire |
In not so awesome....
So last year I Kickstarter'd Planetary Resources ARKYD satellite, the first commercially available satellite (you rent time on it).
Version 3 was going to be launched up today, along with some supplies, to the ISS
....or not |
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| Lagrangian |
Around this triple star system the researchers have already identified a rotating disc of gas and dust, whose center is cleared by gravitational tidal effects. As the three stars orbit around one another, they create an unstable gravitational region called a cavity, through which matter can only travel before falling onto the central stars. Further away, where the outer ring of matter is located, the gravitational field is no longer disturbed, and the rotating matter can form a stable structure.
The existence of a central cavity around GG Tau A, known since the 1990s thanks to observations with the IRAM interferometer, partially confirmed these theoretical predictions. In the 2000s, the presence of gas in the cavity was detected, but the precise dynamics of this gas, which is the key to understanding the accretion mechanisms giving rise to planets, remained largely unknown.
In this new study, complementary observations of carbon monoxide (CO in gaseous form) and of the emission of dust grains around GG Tau A were obtained using the ALMA (Chile) and IRAM (French Alps) interferometers. With unprecedented precision in this field, they unravel some of the mystery surrounding the distribution of matter and the dynamics within the cavity. The images show a stream of gas from the outer ring flowing towards the central stars. The amount of gas transported in this way turns out to be sufficient to feed the inner disc around GG Tau Aa. The observed motion of the gas confirms predictions by earlier numerical simulations. They show that matter from the outer ring is able to feed the inner disc around GG Tau Aa long enough to allow the formation of exoplanets. |
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| Lagrangian |
http://www.theguardian.com/science/...tally-confusing
| quote: | | There has been small flurry of physics headlines over the last few days about the discovery, by physicists at Princeton, of a new kind of particle - a Majorana fermion. Proposed by the Italian physicist Ettore Majorana back in 1937 - a while after Dirac, but well before Brout, Englert and Higgs - so-called “Majorana fermions” get their mass via a unique and previously unobserved self-interaction, which is completely different from Dirac fermions, and nothing to do with Brout, Englert or Higgs*. |
"The finding could also be useful for constructing quantum computers that harness the laws of quantum mechanics to make calculations many times faster than conventional computers. One of the main issues in building a quantum computer is the susceptibility of quantum properties such as entanglement (a connection between two particles such that an action on one affects the other) to collapse due to outside interference. A particle chain with Majoranas capping each end would be somewhat immune to this danger, because damage would have to be done to both ends simultaneously to destroy any information encoded there." |
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| Lagrangian |
The first realistic attempt to analyze extra-terrestrial civilizations from the point of view of the laws of physics and the laws of thermodynamics was by Russian astrophysicist Nicolai Kardashev. He based his ranking of possible civilizations on the basis of total energy output which could be quantified and used as a guide to explore the dynamics of advanced civilizations:
Type I: this civilization harnesses the energy output of an entire planet.
Type II: this civilization harnesses the energy output of a star, and generates about 10 billion times the energy output of a Type I civilization.
Type III: this civilization harnesses the energy output of a galaxy, or about 10 billion time the energy output of a Type II civilization.
A Type I civilization would be able to manipulate truly planetary energies. They might, for example, control or modify their weather. They would have the power to manipulate planetary phenomena, such as hurricanes, which can release the energy of hundreds of hydrogen bombs. Perhaps volcanoes or even earthquakes may be altered by such a civilization.
A Type II civilization may resemble the Federation of Planets seen on the TV program Star Trek (which is capable of igniting stars and has colonized a tiny fraction of the near-by stars in the galaxy). A Type II civilization might be able to manipulate the power of solar flares.
A Type III civilization may resemble the Borg, or perhaps the Empire found in the Star Wars saga. They have colonized the galaxy itself, extracting energy from hundreds of billions of stars.
| quote: | On this scale, one may now rank the different propulsion systems available to different types of civilizations:
Type 0
Chemical rockets
Ionic engines
Fission power
EM propulsion (rail guns)
Type I
Ram-jet fusion engines
Photonic drive
Type II
Antimatter drive
Von Neumann nano probes
Type III
Planck energy propulsion
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http://mkaku.org/home/articles/the-...stellar-travel/ |
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| Lagrangian |
Next Time you see a high school chemistry professor, ask him where the elements on the periodic table come from. I'm sure most will say it comes from the ground, but I rather think of the periodic elements as everything that can be found on Earth after it has been cooked up by Clusters of Stars and Space dust in the Milky Way, created inside Supernovaes and eccentrically orbiting our solar system.
Then you have Ancient Astronauts who would say that the best way to colonize any population, is by infiltrating into the nucleus of the species and Trojan horse your way into the Enemy's intestines, in this case, by Gene tampering, etc.
I would be interested to see if DNA wise we have seen any changes in our tolerance to radiation, UV, and Gamma Ray exposure. If I were able to peek into the future of human evolution, I would see how our Eyes have evolved to make sense of light and quanta. Is there a breakthrough in consciousness and awareness that places the human race at different wavelengths of perception.
| quote: | | ]Applied to the outer shell of the payload section of a rocket using pipettes, small, double-stranded DNA molecules flew into space from Earth and back again. After the launch, space flight, re-entry into Earth's atmosphere and landing, the so-called plasmid DNA molecules were still found on all the application points on the rocket from the TEXUS-49 mission. And this was not the only surprise: For the most part, the DNA salvaged was even still able to transfer genetic information to bacterial and connective tissue cells. "This study provides experimental evidence that the DNA's genetic information is essentially capable of surviving the extreme conditions of space and the re-entry into Earth's dense atmosphere," says study head Professor Oliver Ullrich from the University of Zurich's Institute of Anatomy. |
http://www.sciencedaily.com/releases/2014/11/141126144150.htm |
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