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Milad Parsian
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Milad Parsian

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Zum 5jährigen Jubiläum der Mission Solar Dynamics Observatory (SDO) hat die +NASA dieses Video veröffentlicht.

Ein Frame alle acht Stunden seit Juni 2010 ergeben dieses beeindruckende Video.
Weitere Informationen zu diesem Video, ‪#‎SDO‬ und Live-Bilder der ‪#‎Sonne‬ auf
http://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=11762
http://sdo.gsfc.nasa.gov/

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Well this is really a breathtaking view of the sun!


Credit: Solar Dynamics Observatory, NASA (http://sdo.gsfc.nasa.gov/)

#SDO #NASA #SUN #SPACE
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Jupiter Triple-Moon Conjunction
Image Credit: +NASA, +European Space Agency, ESA, and the Hubble Heritage Team (STScI/AURA)
http://apod.nasa.gov/apod/ap150206.html

Our solar system's ruling giant planet Jupiter and 3 of its 4 large Galilean moons are captured in this single Hubble snapshot from January 24. Crossing in front of Jupiter's banded cloud tops Europa, Callisto, and Io are framed from lower left to upper right in a rare triple-moon conjunction. Distinguishable by colors alone icy Europa is almost white, Callisto's ancient cratered surface looks dark brown, and volcanic Io appears yellowish. The transiting moons and moon shadows can be identified by sliding your cursor over the image, or following this link. Remarkably, two small, inner Jovian moons, Amalthea and Thebe, along with their shadows, can also be found in the sharp Hubble view. The Galilean moons have diameters of 3,000 to 5,000 kilometers or so, comparable in size to Earth's moon. But odd-shaped Amalthea and Thebe are only about 260 and 100 kilometers across respectively.
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M104: The Sombrero Galaxy
Image Data: +NASA, ESO , NAOJ, Giovanni Paglioli - Processing: R. Colombari
http://apod.nasa.gov/apod/ap150205.html

The striking spiral galaxy M104 is famous for its nearly edge-on profile featuring a broad ring of obscuring dust lanes. Seen in silhouette against an extensive bulge of stars, the swath of cosmic dust lends a broad brimmed hat-like appearance to the galaxy suggesting the more popular moniker, The Sombrero Galaxy. Hubble Space Telescope and ground-based Subaru data have been reprocessed with amateur color image data to create this sharp view of the well-known galaxy. The processing results in a natural color appearance and preserves details often lost in overwhelming glare of M104's bright central bulge when viewed with smaller ground-based instruments. Also known as NGC 4594, the Sombrero galaxy can be seen across the spectrum and is thought to host a central supermassive black hole. About 50,000 light-years across and 28 million light-years away, M104 is one of the largest galaxies at the southern edge of the Virgo Galaxy Cluster.
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Latest News: At first glance, galaxy NGC 7714 resembles a partial golden ring. This unusual structure is a river of Sun-like stars that has been pulled deep into space by the gravitational tug of a bypassing galaxy (not visible in this Hubble Space Telescope photo). Though the universe is full of such colliding galaxies that are distorted in a gravitational taffy-pull, NGC 7714 is particularly striking for the seeming fluidity of the stars along a vast arc. The near-collision between the galaxies happened at least 100 million years ago.

http://hubblesite.org/newscenter/archive/releases/2015/04
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Forscher ergänzen Suchmaschine um Tag-Cloud - Das an der Universität Helsinki entwickelte System SciNet soll aus einem Suchvorgang einen Entdeckungs- und Verstehensprozess machen. Anwender rücken für ihre Anfrage wichtige und unwichtige Begriffe auf einem "Intent Radar" zurecht, bis das Ergebnis ihren Vorstellungen entspricht. http://ow.ly/2TZo53
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Das an der Universität Helsinki entwickelte System SciNet soll aus einem Suchvorgang einen Entdeckungs- und Verstehensprozess machen. Anwender rücken für ihre Anfrage wichtige und unwichtige Begriffe auf einem "Intent Radar" zurecht, bis das Ergebnis ihren Vorstellungen entspricht.
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The new generation of Search Engines?

#SearchEngines

ETSIMO SciNet version: http://youtu.be/6AH_RD_hAOA
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Fibrils Flower on the Sun
Image Credit & Copyright: Big Bear Solar Obs., NJIT, Alan Friedman (Averted Imagination)
http://apod.nasa.gov/apod/ap150217.html

When does the Sun look like a flower? In a specific color of red light emitted by hydrogen, as featured here, some regions of the solar chromosphere may resemble a rose. The color-inverted image was taken in 2014 October and shows active solar region 2177. The petals dominating the frame are actually magnetically confined tubes of hot plasma called fibrils, some of which extend longer the diameter of the Earth. In the central region many of these fibrils are seen end-on, while the surrounding regions are typically populated with curved fibrils. When seen over the Sun's edge, these huge plasma tubes are called spicules, and when they occur in passive regions they are termed mottles. Sunspot region 2177 survived for several more days before the complex and tumultuous magnetic field poking through the Sun's surface evolved yet again.
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An Extremely Long Filament on the Sun
Image Credit & Copyright: Oliver Hardy
http://apod.nasa.gov/apod/ap150210.html

Yesterday, the Sun exhibited one of the longest filaments ever recorded. It may still be there today. Visible as the dark streak just below the center in the featured image, the enormous filament extended across the face of the Sun a distance even longer than the Sun's radius -- over 700,000 kilometers. A filament is actually hot gas held aloft by the Sun's magnetic field, so that viewed from the side it would appear as a raised prominence. The featured image shows the filament in light emitted by hydrogen and therefore highlights the Sun's chromosphere. Sun-following telescopes including NASA's Solar Dynamics Observatory (SDO) are tracking this unusual feature, with SDO yesterday recording a spiraling magnetic field engulfing it. Since filaments typically last only from hours to days, parts of this one may collapse or erupt at any time, either returning hot plasma back to the Sun or expelling it into the Solar System. Is the filament still there? You can check by clicking on SDO's current solar image.
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A comparison between the hypergiant star VY Canis Majoris, our Sun and Earth’s orbit.

VY Canis Majoris is so huge that if it was to replace our Sun here in the Solar System, its surface would stretch out beyond Jupiter's, or even Saturn’s, orbit.

Hypergiants like VY Canis Majoris are so massive, that they devour themselves at exponential rates. The amount of energy our Sun emits in year is equal to what a hypergiant would release in the matter of just 6 seconds. It is believed that VY Canis Majoris has already shed half of its original mass, and could literally reach hypernovae at any time, but some astronomers believe that the star has the capability to last nearly another 100,000 years.

Via http://www.fromquarkstoquasars.com/on-the-giants-of-the-cosmos/

Source of the pic and size comparison between Hypergiant Stars: http://www.fromquarkstoquasars.com/behemoths-of-the-universe-hypergiant-stars/
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Dark Energy, Dark Matter
In the early 1990s, one thing was fairly certain about the expansion of the Universe. It might have enough energy density to stop its expansion and recollapse, it might have so little energy density that it would never stop expanding, but gravity was certain to slow the expansion as time went on. Granted, the slowing had not been observed, but, theoretically, the Universe had to slow. The Universe is full of matter and the attractive force of gravity pulls all matter together. Then came 1998 and the Hubble Space Telescope (HST) observations of very distant supernovae that showed that, a long time ago, the Universe was actually expanding more slowly than it is today. So the expansion of the Universe has not been slowing due to gravity, as everyone thought, it has been accelerating. No one expected this, no one knew how to explain it. But something was causing it.
Eventually theorists came up with three sorts of explanations. Maybe it was a result of a long-discarded version of Einstein's theory of gravity, one that contained what was called a "cosmological constant." Maybe there was some strange kind of energy-fluid that filled space. Maybe there is something wrong with Einstein's theory of gravity and a new theory could include some kind of field that creates this cosmic acceleration. Theorists still don't know what the correct explanation is, but they have given the solution a name. It is called dark energy.
http://science.nasa.gov/astrophysics/focus-areas/what-is-dark-energy/
#darkmatter #darkenergy 
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I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use. (Galileo Galilei)
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