Thursday 11 December 2014

NASA's Great Observatories Witness a Galactic Spec iPad Mini Case

Here's a great iPad case from Zazzle featuring a Hubble-related design. Maybe you'd like to see your name on it? Click to personalize and see what it's like!


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A new image of two tangled galaxies has been released by NASA's Great Observatories. The Antennae galaxies, located about 62 million light-years from Earth, are shown in this composite image from the Chandra X-ray Observatory (blue), the Hubble Space Telescope (gold and brown), and the Spitzer Space Telescope (red). The Antennae galaxies take their name from the long, antenna-like arms seen in wide-angle views of the system. These features were produced in the collision.

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Scientists measure speedy electrons in silicon

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Attosecond lasers provide the shortest light pulses yet, allowing observation of nature's most short-lived events. Researchers have used these lasers for the first time to take snapshots of electrons jumping from silicon atoms into the conduction band of a semiconductor, the key event behind the transistor. They clocked the jump at 450 attoseconds and saw the rebound of the crystal lattice 60 femtoseconds later: a delay 120 times longer than the jump itself.

via Science Daily

New process can convert human-generated waste into fuel in space

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Buck Rogers surely couldn’t have seen this one coming, but at NASA’s request,University of Florida researchers have figured

The post New process can convert human-generated waste into fuel in space has been published on Technology Org.

 
#materials 
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High photosensitivity 2D-few-layered molybdenum diselenide phototransistors

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Researchers have fabricated High photosensitivity back-gated field-effect phototransistors made of only 20 nanometer thick molybdenum diselenide crystals by facile mechanical cleavage and transfer of MoSe2 flakes onto a silicon wafers for next generation for photodetector applications.

via Science Daily

Solar System Montage of Voyager Images Poster

Here's a great poster featuring a beautiful image from deep space


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Solar System Montage of Voyager Images Photograph - Outer Space was created in 2001. This image depicts scenes from Outer Space.

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Firefly Space Systems charges full-speed toward low Earth orbit

Science Focus

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CEDAR PARK, TEXAS—Former SpaceX engineer Tom Markusic has brought Firefly Space Systems to the outskirts of Austin to make rockets and chew bubblegum, and he’s all out of gum. Standing in the vast field on the outskirts of the Texas state capital watching Markusic flitting between clusters of workers welding together test stand equipment, it's easy to get caught up in the man’s vision of democratizing access to space—a vision of filling that vault of empty sky above our heads with countless twinkling lights.

That’s the genesis of the company name: Firefly Space Systems. It isn’t named after the TV show, as many people commonly assume. Rather, Markusic says the name came to him one evening while sitting on his back porch, watching fireflies dance in the air over his lawn. One day, he believes, that’s what the sky above Earth will look like—filled with spacecraft ferrying people to Mars, in a journey as commonplace as going to the store might be today.

But to get to Mars—really, to get anywhere at all—we’ve first got to make it easy for people and equipment to claw their way up out of Earth’s gravity. After all, as the Heinlein quote on Firefly’s website explains, "When you’re in low Earth orbit, you’re halfway to everywhere." Making that first hundred miles easy and affordable is what Markusic wants to do.

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 » see original post http://feeds.arstechnica.com/~r/arstechnica/science/~3/kRENCilTmTw/
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Cooling with the coldest matter in the world

Science Focus

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Physicists at the University of Basel have developed a new cooling technique for mechanical quantum systems. Using an

The post Cooling with the coldest matter in the world has been published on Technology Org.

 
#physics 
 » see original post http://feedproxy.google.com/~r/TechnologyOrgPhysicsNews/~3/VaE3q0vS7WQ/
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Graphene promise for body armour

Science Focus

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The "wonder material" graphene could be used to make bulletproof armour, new research suggests. 
#science 
 » see original post http://www.bbc.co.uk/news/science-environment-30246089#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa
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Moondog Night

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In this night scene from the early hours of November 14, light from a last quarter Moon illuminates clouds above the mountaintop domes of Kitt Peak National Observatory near Tucson, Arizona. Bright Jupiter is just left of the overexposed lunar disk with a streak of camera lens flare immediately to the right, but that's no fireball meteor exploding near the center of the picture. Instead, from the roadside perspective a stunningly bright moondog or paraselene stands directly over Kitt Peaks's WIYN telescope. Analogous to a sundog or parhelion, a paraselene is produced by moonlight refracted through thin, hexagonal, plate-shaped ice crystals in high cirrus clouds. As determined by the crystal geometry, paraselenae (plural) are seen at an angle of 22 degrees or more from the Moon. Compared to the bright lunar disk they are more often faint and easier to spot when the Moon is low. About 10 minutes after the photograph even this bright moondog had faded from the night.
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Zazzle Space Gifts for young and old

Lobster Nebula Wall Stickers

Here's a great wall decal featuring a beautiful image from deep space


tagged with: lobster nebula, star cluster, stars, nebula, ngc 6357, emission nebula, cosmology, astronomy, starcluster, space, universe, astronomer, war and peace nebula, nebulaes, nebulas, milky way, galaxy, galaxies

This image from ESO’s VISTA telescope captures a celestial landscape of vast, glowing clouds of gas and tendrils of dust surrounding hot young stars. This infrared view reveals the stellar nursery known as NGC 6357 in a new light. It was taken as part of the VISTA Variables in the Vía Láctea (VVV) survey, which is currently scanning the Milky Way in a bid to map our galaxy’s structure and explain how it formed. Source http://www.eso.org/public/images/eso1309a/ Author: ESO/VVV Survey/D. Minniti.

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Scalable growth of high quality bismuth nanowires

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Bismuth nanowires have intriguing electronic and energy-harvesting application possibilities. However, fabricating these materials with high quality and in large quantities is challenging.



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Monogram Barred Spiral Galaxy NGC 1672 iPad Folio Case

Here's a great iPad case from Zazzle featuring a Hubble-related design. Maybe you'd like to see your name on it? Click to personalize and see what it's like!


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Galaxies, Stars and Nebulae series This NASA Hubble Space Telescope view of the nearby barred spiral galaxy NGC 1672 unveils details in the galaxy's star-forming clouds and dark bands of interstellar dust.
One of the most striking features is the dust lanes that extend away from the nucleus and follow the inner edges of the galaxy's spiral arms. Clusters of hot young blue stars form along the spiral arms and ionize surrounding clouds of hydrogen gas that glow red. Delicate curtains of dust partially obscure and redden the light of the stars behind them by scattering blue light.
Galaxies lying behind NGC 1672 give the illusion they are embedded in the foreground galaxy, even though they are really much farther away. They also appear reddened as they shine through NGC 1672's dust. A few bright foreground stars inside our own Milky Way Galaxy appear in the image as bright and diamond-like objects.
As a prototypical barred spiral galaxy, NGC 1672 differs from normal spiral galaxies, in that the arms do not twist all the way into the center. Instead, they are attached to the two ends of a straight bar of stars enclosing the nucleus. Viewed nearly face on, NGC 1672 shows intense star formation regions especially off in the ends of its central bar.
Astronomers believe that barred spirals have a unique mechanism that channels gas from the disk inward towards the nucleus. This allows the bar portion of the galaxy to serve as an area of new star generation.
NGC 1672 is also classified as a Seyfert galaxy. Seyferts are a subset of galaxies with active nuclei. The energy output of these nuclei can sometimes outshine their host galaxies. This activity is powered by accretion onto supermassive black holes.
NGC 1672 is more than 60 million light-years away in the direction of the southern constellation Dorado. These observations of NGC 1672 were taken with Hubble's Advanced Camera for Surveys in August of 2005. The composite image was made by using filters that isolate light from the blue, green, and infrared portions of the spectrum, as well as emission from ionized hydrogen.
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image code: bsgsst

Image credit: NASA, ESA, and The Hubble Heritage Team (STScI/AURA)-ESA/Hubble Collaboration

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Cooling with the coldest matter in the world

original post »

Physicists at the University of Basel have developed a new cooling technique for mechanical quantum systems. Using an

The post Cooling with the coldest matter in the world has been published on Technology Org.

 
#materials 
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Galileo quote poster

Here's a great poster featuring a beautiful image from deep space


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Water vapor on Rosetta's target comet significantly different from that found on Earth

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ESA's Rosetta spacecraft has found the water vapor from its target comet to be significantly different to that found on Earth. The discovery fuels the debate on the origin of our planet's oceans. One of the leading hypotheses on Earth's formation is that it was so hot when it formed 4.6 billion years ago that any original water content should have boiled off. But, today, two thirds of the surface is covered in water, so where did it come from? In this scenario, it should have been delivered after our planet had cooled down, most likely from collisions with comets and asteroids.

via Science Daily

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Star Cluster Pismis 24, core of NGC 6357 Sticker

Here's a great sheet of stickers featuring a beautiful image from deep space


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Galaxies, Stars and Nebulae series The star cluster Pismis 24 lies in the core of the large emission nebula NGC 6357 that extends one degree on the sky in the direction of the Scorpius constellation. Part of the nebula is ionised by the youngest (bluest) heavy stars in Pismis 24. The intense ultraviolet radiation from the blazing stars heats the gas surrounding the cluster and creates a bubble in NGC 6357. The presence of these surrounding gas clouds makes probing into the region even harder. One of the top candidates for the title of "Milky Way stellar heavyweight champion" was, until now, Pismis 24-1, a bright young star that lies in the core of the small open star cluster Pismis 24 (the bright stars in the Hubble image) about 8,000 light-years away from Earth. Pismis 24-1 was thought to have an incredibly large mass of 200 to 300 solar masses. New NASA/ESA Hubble measurements of the star, have, however, resolved Pismis 24-1 into two separate stars, and, in doing so, have "halved" its mass to around 100 solar masses.

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image code: sclustpsms

Image credit: NASA/ESA Hubble

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Personalized Monkey Head Nebula Star Wall Decor

Here's a great wall decal featuring a beautiful image from deep space


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Star with a pretty space image. The February 2014 picture of the Monkey Head Nebula released in April in "celebration of the 24th anniversary of the launch of NASA's Hubble Space Telescope (on April 24, 1990)." The Monkey Head Nebula is also known as NGC 2174 and Sharpless Sh2-252.

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