Wednesday 16 September 2015

Converging black holes in Virgo constellation

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Astronomers have provided additional evidence that a pair of closely orbiting black holes deep in the Virgo constellation is causing the rhythmic flashes of light coming from quasar PG 1302-102. Based on calculations of the pair's mass -- together, and relative to each other -- the researchers go on to predict a smashup 100,000 years from now, far sooner than previously predicted.
via Science Daily
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Novel Layering Process Allows for Transfering Graphene‘s 2D Properties to a Macroscopic 3D Stucture

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Researchers at the Rensselaer Polytechnic Institute (RPI), New York, USA, have come up with a way to transform

The post Novel Layering Process Allows for Transfering Graphene's 2D Properties to a Macroscopic 3D Stucture has been published on Technology Org.

 
#materials 
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Researchers demo solar water-splitting technology

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Rice University researchers have demonstrated an efficient new way to capture the energy from sunlight and convert it

The post Researchers demo solar water-splitting technology has been published on Technology Org.

 
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A shy galactic neighbor

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The Sculptor Dwarf Galaxy is a close neighbor of our galaxy, the Milky Way. Despite their close proximity, both galaxies have very distinct histories and characters. This galaxy is much smaller and older than the Milky Way, making it a valuable subject for studying both star and galaxy formation in the early universe.
via Science Daily
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Watching an exoplanet in motion around a distant star

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A team of astronomers has given us our best view yet of an exoplanet moving in its orbit around a distant star.
via Science Daily
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More Evidence for Coming Black Hole Collision

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A new report supports the theory that two black holes in a galaxy 3.5 billion light-years away are headed for a cosmic collision of unimaginable scale.










via New York Times

'Hot Jupiter' exoplanets may have formed very rapidly

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Twenty years after they were first discovered, 'hot Jupiters', gas giant planets that orbit very close to their star, are still enigmatic objects. Astronomers have now shown that such bodies may only take several million years to migrate close to their newly formed star. The discovery should shed light on how solar systems like - or unlike - our own Solar System form and evolve over the course of their existence.
via Science Daily
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Stonehenge at Night Poster

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


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ImageID: AX028971 / M. Dillon / CORBIS / Stonehenge at Night /

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Baked Alaska

Science Focus

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EARLIER THIS WINTER, Monica Zappa packed up her crew of Alaskan sled dogs and headed south, in search of snow. "We haven't been able to train where we live for two months," she told me.

Alaska's Kenai Peninsula, which Zappa calls home, was practically tropical this winter. Rick Thoman, a meteorologist with the National Weather Service in Alaska, has been dumbfounded. "Homer, Alaska, keeps setting record after record, and I keep looking at the data like, Has the temperature sensor gone out or something?"

Something does seem to be going on in Alaska. Last fall, a skipjack tuna, which is more likely to be found in the Galápagos than near a glacier, was caught about 150 miles southeast of Anchorage, not far from the Kenai. A few weeks ago, race organizers had to truck in snow to the ceremonial Iditarod start line in Anchorage.

Alaska is heating up at twice the rate of the rest of the country — a canary in our climate coal mine. A new report shows that warming in Alaska, along with the rest of the Arctic, is accelerating as the loss of snow and ice cover begins to set off a feedback loop of further warming. Warming in wintertime has been the most dramatic — more than 6 degrees in the past 50 years. And this is just a fraction of the warming that's expected to come over just the next few decades.

Of course, it's not just Alaska. This February was the most extreme on record in the Lower 48, and it marked the first time that two large sections of territory (each more than 30 percent of the country) experienced both exceptional cold and exceptional warmth in the same month, according to data from the National Oceanic and Atmospheric Administration. All-time records were set for the coldest month in dozens of Eastern cities, with Boston racking up more snow than the peaks of California's Sierra Nevada. A single January storm in Boston produced more snow than Anchorage saw all winter.

ALASKA IS ON the front lines of climate change. This year's Iditarod was rerouted — twice — because of the warm weather. The race traditionally starts in Anchorage, which had near-record-low snowfall this winter. The city was without a single significant snowstorm between October and late January, so race organizers decided to move the start from the Anchorage area 360 miles north to Fairbanks. But when the Chena River, which was supposed to be part of the new route's first few miles, failed to sufficiently freeze, the starting point had to move again, to another location in Fairbanks.

On March 9, Zappa set out with her dogs on the 1,000-mile race across Alaska as one of 78 mushers in this year's Iditarod. For most of the winter, the weather across the interior of the state had been abnormally warm. To train, many teams of dogs and their owners had to travel, often "outside" — away from Alaska. Zappa ended up going to the mountains of Wyoming.

"I mean, what's living in Alaska if it's not cold and snowy?"

A recent study said that Alaska's rivers and melting glaciers are now outputting more water than the Mississippi River. Last year was Alaska's warmest on record, and the warm weather has continued right on into 2015. This winter, Anchorage essentially transformed into a less sunny version of Seattle. As of March 9, the city had received less than one-third of its normal amount of snow. In its place? Rain. Lots of rain. In fact, schools in the Anchorage area are now more likely to cancel school because of rain and street flooding than because of cold and snow.

Of course, it wasn't always this way. Alaska's recent surge of back-to-back warm winters comes after a record-snowy 2012, when the National Guard was employed to help dig out buried towns. Then, about two years ago, something in the climate system switched. The state's recent brush with extreme weather is more than just year-to-year weather variability. Alaska is at the point where the long-term trend of warming has begun to trump seasonal weather fluctuations. A recent shift toward warmer offshore ocean temperatures is essentially adding more fuel to the fire, moving the state toward profound tipping points like the irreversible loss of permafrost and increasingly violent weather. If the current warm ocean phase (which began in 2014) holds for a decade or so, as is typical, Alaska will quickly become a different place.

The Pacific Ocean near Alaska has been record-warm for months now. This year is off to a record-wet start in Juneau. Kodiak experienced its warmest winter on record. A sudden burst of ocean warmth has affected statewide weather before, but this time feels different, residents say. In late February, National Weather Service employees spotted thundersnow in Nome — a city just 100 miles south of the Arctic Circle. "As far as I know, that's unprecedented," Thoman told me. Thunderstorms of any kind require a level of atmospheric energy that's rarely present in cold climates. To get that outside of the summer is incredibly rare everywhere, let alone in Alaska.

Climate scientists are starting to link the combination of melting sea ice and warm ocean temperatures to shifts in the jet stream. For the past few winters, those shifts have brought surges of tropical moisture toward southern Alaska via potent atmospheric rivers. This weather pattern has endured so long, it's even earned its own name: the Ridiculously Resilient Ridge. The persistent area of high pressure stretching from Alaska to California has shunted wintertime warmth and moisture northward into the Arctic while the eastern half of the continent is plunged into a deep freeze, polar-vortex style.

The warm water is making its way north into the Arctic Ocean, too, where as of early March, sea ice levels were at their record lowest for the date. The resurgent heating of the Pacific (we're officially in an El Niño year now) is also expected to give a boost to global warming over the next few years by releasing years of pent-up oceanic energy into the atmosphere, pushing even more warm water toward the north, melting Alaska from all sides.

That means Alaska's weather, according to one Alaska meteorologist, is "broken." Dave Snider, who reports statewide weather daily for the National Weather Service's Alaska office in Anchorage, tweeted the sentiment back in mid-January. Snider emphasized that this isn't the official view of the National Weather Service, "of course." Snider told me he made the comment "sort of in jest" but pointed to the nearly snow-free Iditarod start as evidence.

Here's another example he could have used: In early November, Super Typhoon Nuri morphed into a huge post-tropical cyclone, passing through the Aleutians very near Shemya Island on its way to becoming Alaska's strongest storm on record. Despite winds near 100 mph, Shemya emerged relatively unscathed. A few days later, the remnants of that storm actually altered the jet stream over much of the continent, ushering in a highly amplified "omega block" pattern that dramatically boosted temperatures across the state and sent wave after wave of Arctic cold toward the East Coast. Barrow was briefly warmer than Dallas or Atlanta.

THE WARM WEATHER isn't all bad news. The city of Anchorage has saved an estimated \$1 million on snow removal this year and is instead pouring the money into fixing potholes and other backlogged maintenance issues. But getting around the rest of the state hasn't been so easy.

There are few roads in rural Alaska, so winter travel is often done by snowmobiles over frozen rivers. Not this year. Warm temperatures in February led to thin ice and open water in the southwest part of the state near Galena and Bethel. David Hulen, managing editor for the Alaska Dispatch News in Anchorage, has spent nearly 30 years in the state. He says the freeze-thaw cycle is out of whack, "changing the nature of the place." Usually, things freeze in the fall and unfreeze in the spring; this winter, they've seen a nearly constant back and forth between freezing and thawing.

That's made it difficult for skiers and those enjoying other outdoor activities, like riding fat-tire bikes attuned to the snow. Julie Saddoris, of the Bike Me Anchorage Meetup, says attendance in her group was down this winter. Hulen agrees that it's been frustrating. "I mean, what's living in Alaska if it's not cold and snowy?"

Those are city problems. Along the state's west coast, some native coastal villages are facing an existential threat, as sea levels rise in response to the warm water. Earlier this winter, Washington Post climate reporter Chris Mooney visited Kivalina, one of the six villages considering plans to relocate because of climate change. "Here, climate change is less a future threat and more a daily force, felt in drastic changes to weather, loss of traditional means of sustenance like whale hunting, and the literal vanishing of land," Mooney wrote. Another village, Newtok, is a bit further along in the relocation process, with construction on their new village — Mertarvik — already underway.

For now, the most visible change is still in the shifting habitats of the fish, birds, trees, and animals. Permafrost still covers 85 percent of the state, but "almost everywhere, the depth of the active layer is increasing over the last few decades," said Thoman. Since the active layer — the zone of soil above the permafrost that thaws out each summer — now penetrates deeper down, that means landforms are shifting, lakes are draining, and new forests are springing up.

Patricia Owen is a biologist at Denali National Park and Preserve who studies grizzly bears. Last winter, warm weather brought blueberry blossoms earlier than normal. The blossoms then froze, making foraging for food more challenging for bears. Mother bears need to have good health in the fall to support their cubs during the long winter months of hibernation. Owen is seeing evidence of other changes within Denali: More episodes of freezing rain are having a big impact on sheep, which have to scrape through ice to eat. In low-snow years like this one, wolves seem to suffer, since caribou and moose can escape more quickly.

Recent warming also appears to have pushed Denali's poplar forests across a threshold toward rapid expansion. Carl Roland, a Denali plant ecologist who has compiled a trove of repeat photographs around the park spanning decades of environmental change, says that what he's seeing is "dramatic."

Once the permafrost goes, Roland says, we can expect a "regime shift" in the park and across the state. The northward spread of tree-killing insects is also a "really big unknown" in interior Alaska. Last spring, a huge forest fire in a beetle kill area of the Kenai Peninsula sent smoke plumes hundreds of miles northward toward Fairbanks.

For southern Alaska, fire season has been coming earlier in recent years, and 2015 looks to be no exception. A few years ago, the Alaska Division of Forestry statutorily moved the start of the fire season up from May 1 to April 1 "as a result of climate change," Tim Mowry, a division spokesman, told me. The change, Mowry says, was intended to elicit "a sense of urgency."

Excerpted from an article that originally appeared on Slate.com. Reprinted with permission.

 
#science 
 » see original post http://theweek.com/articles/546496/baked-alaska
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Sustainable development, science, and the UN

Science Focus

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In 2000, the UN set eight international development goals, known as the Millennium Development Goals, which were to be achieved by 2015. These goals included the eradication of extreme poverty, universal primary education, gender equality, reduced child mortality, improved maternal health, reduced HIV/Aids and other diseases, environmental sustainability, and global partnership for development.

Clearly, most of those are still works-in-progress. As the time frame for their accomplishment is drawing to a close, the UN member states have created a list of seventeen new Sustainable Development Goals.

The new Sustainable Development Goals, much like their predecessors, are a set of general targets. These goals are intended to address a wide range of issues, including addressing poverty and hunger, combating climate change, protecting delicate ecosystems, and making urban environments more sustainable. In an editorial published in Science, Dr. William Colglazier, science and technology adviser to the US Secretary of State, provides some insights into how science, technology, and innovation could help make these a reality.

Read 10 remaining paragraphs | Comments

 
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 » see original post http://arstechnica.com/science/2015/09/sustainable-development-science-and-the-un/
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Breakthrough in the performance of 2D semiconductors

Science Focus

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Over the past ten years, the development of the so-called 2D semiconductors has evolved rapidly. 2D semiconductors are

The post Breakthrough in the performance of 2D semiconductors has been published on Technology Org.

 
#physics 
 » see original post http://feedproxy.google.com/~r/TechnologyOrgPhysicsNews/~3/BvFlWJdh2FA/
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Carina Nebula - Breathtaking Universe Star Sticker

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


tagged with: star clusters, galaxies, starfields, constellation puppis, the stern, star nurseries, nebulae, space exploration, universe photographs, hrbstslr stlrnrsry, european southern observatory, eso, vista

Galaxies, Stars and Nebulae series A gorgeous set of oval stickers showing the area surrounding the stellar cluster NGC 2467, located in the southern constellation of Puppis ("The Stern"). With an age of a few million years at most, it is a very active stellar nursery, where new stars are born continuously from large clouds of dust and gas.

The image, looking like a colourful cosmic ghost or a gigantic celestial Mandrill, contains the open clusters Haffner 18 (centre) and Haffner 19 (middle right: it is located inside the smaller pink region - the lower eye of the Mandrill), as well as vast areas of ionised gas.

The bright star at the centre of the largest pink region on the bottom of the image is HD 64315, a massive young star that is helping shaping the structure of the whole nebular region.

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ESO/J. Emerson/VISTA www.eso.org
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Name, Barred Spiral Galaxy NGC 1672 Wrapping Paper

Get your out-of-this-world gift wrap here! Perfect for Christmas gifts for anyone who is fascinated by what the universe holds in store for us!


tagged with: star galaxies, deep space astronomy, barred spiral galaxy, bsgsst, starry space picture, galactic arms, supermassive black hole, dust lanes, star forming galaxy, outer space telescope images

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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Advanced LIGO to begin operations

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The Advanced LIGO Project, a major upgrade of the Laser Interferometer Gravitational-Wave Observatory, is completing its final preparations before the initiation of scientific observations, scheduled to begin in mid-September. Designed to observe gravitational waves—ripples in the fabric of space and time—LIGO, which was designed and is operated by Caltech and MIT with funding from the National Science Foundation (NSF), consists of identical detectors in Livingston, Louisiana, and Hanford, Washington.

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Bright Spots Resolved in Occator Crater on Ceres

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Zazzle Space Gifts for young and old

Hubble Captures Outburst from Comet iPad Folio Cover

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Harvard Fellows to join Graphenea

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Graphenea Inc. will collaborate with Harvard University through the Harvard Ventures Fellowship program, which will teach five bright students about startup company life. The students will work as a team on a project with Graphenea Inc., enriching their studies with hands-on startup experience and learning about Graphenea Inc. in particular.

Harvard Ventures Fellowships are offered by Harvard College Ventures, the undergraduate entrepreneurship club at Harvard University. The student-led club connects passionate individuals across the Harvard campus with each other and provides them with the resources to launch and improve their startups. A core element of the club's activity is drawing experience from local startups, hence the club organizes frequent meetings of the students with local entrepreneurs. In line with this mission, Graphenea CEO Jesus de la Fuente spoke to students last week, telling the story of Graphenea and discussing possible student participation through fellowships. Graphenea has numerous active scientific collaborations with Harvard University.

Graphenea Inc. is the year-old outpost of Graphenea in North America, headquartered in Boston, MA, in close proximity to Harvard and the Massachusetts Institute of Technology (MIT). Apart from developing collaborative projects with those two partners, and acting as a sales outpost for its renown high-quality graphene, Graphenea Inc houses an “Applications Laboratory” to help develop custom graphene materials. The students will work on business projects related to the company's activities in directions of advanced polymers, thermal interface materials, energy storage, and (bio)sensors.


via Graphenea

Defects Through the Looking Glass

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Nanoscale defects are enormously important in shaping the electrical, optical, and mechanical properties of a material. For example,

The post Defects Through the Looking Glass has been published on Technology Org.

 
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SOHO 3000

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The international SOHO solar observatory has discovered its 3000th comet
via ESA Space Science
http://www.esa.int/spaceinimages/Images/2015/09/SOHO_s_3000th_comet

New partnership encourages businesses to develop CERN tech

The signing of the BIC (Business Incubation Centre) agreement with Helsinki Institute of Physics (Image: Sophia Bennett/ CERN)

The latest Business Incubation Centre of CERN technologies (BIC) agreement was signed today in conjunction with the Helsinki Institute of Physics and Tampere University of Technology.

The BIC will support businesses and entrepreneurs to develop innovative ideas in fields broadly related to CERN activities – bridging the gap between basic science and industry.

“Finland's lively start-up culture makes fertile ground for new efforts in developing of CERN-related innovation. This new Business Incubation Centre demonstrates CERN's full commitment to maximizing the benefit to society across CERN’s areas of expertise,” says Rolf Heuer, CERN Director General.

The CERN Knowledge Transfer group work with Business Incubator Centres to encourage entrepreneurs to turn technology developed at CERN into useful, marketable ideas.

They are actively involved in the selection of companies applying to the BIC to ensure that only the best proposals, compatible with CERN work and values, go through.

“Our technologies are already available through various schemes ranging from R&D partnerships to licenses and consultancy. The Finnish BIC of CERN technologies is an important addition to the network of BIC’s in member states,” continued Head of CERN Knowledge Transfer Group, Giovanni Anelli.

CERN will contribute with the transfer of knowledge and know-how through technical visits to CERN, support for the centre and preferential-rate licensing of CERN intellectual property.

The agreement follows the establishment of BICs in six other CERN Member States: the UK, Netherlands, Norway, Austria, Greece and France.

 
 

via CERN: Updates for the general public
http://home.web.cern.ch/about/updates/2015/09/new-partnership-encourages-businesses-develop-cern-tech

Entanglement lifetime extended orders of magnitude using coupled cavities

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(Phys.org)—Entangled qubits form the basic building blocks of quantum computers and other quantum technologies, but when qubits lose their entanglement, they lose their quantum advantage over classical bits. Unfortunately, entanglement decays very quickly due to unavoidable interactions with the surrounding environment, so preserving entanglement for long enough to use it has been a key challenge for realizing quantum technologies.

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Planets of the Solar System Poster

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ImageID: CB061976 / Corbis / Planets of the Solar System/ /

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Custom Name, Deep Space Phenomena Cigar Galaxy Wrapping Paper

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tagged with: agmet, chandra, messier 82, cigar galaxy, active galaxies, outer space images, deep space photography, hubble astronomy, sky watching, outer space star telescope images

Galaxies, Stars and Nebulae series Composite of images of the active galaxy Messier 82 from the three Great Observatories: Hubble Space Telescope, Chandra X-Ray Observatory, and Spitzer Space Telescope. X-ray data recorded by Chandra appears here in blue, infrared light recorded by Spitzer appears in red. Hubble's observation of hydrogen emission appears in orange. Hubble's bluest observation appears in yellow-green.
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Rosetta Mission: Ptolemy sniffs next piece of the comet puzzle

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New results from Ptolemy -- an instrument on the Rosetta mission’s Philae lander, suggest that Comet 67P/Churyumov-Gerasimenko may be giving of different gases from different parts of its surface, making it heterogeneous in nature, Ptolemy -- the gas analysis instrument on board Philae, has taken measurements of the concentration of volatile molecules at the lander’s final resting site, known as. Its findings have shown the presence of both water (H2O) and carbon dioxide (CO2), but of very little carbon monoxide (CO).
via Science Daily
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Stellar Nurseries RCW120 Star Sticker

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


tagged with: envelope sealers, nebulae, gstlnrsr, rcw120, breathtaking astronomy images, star nurseries, ionised gas clouds, star forming regions, clusters of stars, starfields, european southern observatory, galaxies, eso, vista

Galaxies, Stars and Nebulae series

A fantastic set of stickers, with a monogram for you to change, featuring a colour composite image of RCW120.

It reveals how an expanding bubble of ionised gas about ten light-years across is causing the surrounding material to collapse into dense clumps where new stars are then formed.

The 870-micron submillimetre-wavelength data were taken with the LABOCA camera on the 12-m Atacama Pathfinder Experiment (APEX) telescope. Here, the submillimetre emission is shown as the blue clouds surrounding the reddish glow of the ionised gas (shown with data from the SuperCosmos H-alpha survey). The image also contains data from the Second Generation Digitized Sky Survey (I-band shown in blue, R-band shown in red).

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Image code: gstlnrsr

ESO/J. Emerson/VISTA www.eso.org
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Earth's pull is 'massaging' our moon

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Earth's gravity has influenced the orientation of thousands of faults that form in the lunar surface as the moon shrinks, according to new results.
via Science Daily
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Spitzer and Hubble Create Colorful Masterpiece iPad Air Cover

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!


tagged with: galaxy, space, universe, stars, planets, travel, exploration, science, sun, astronomy, the milky way, telescope images, moons, phenomena, supernovas, cosmos, cosmology, nebula, star cluster, solar system, space shuttle, nasa, space images, themilkyway, spitzer, hubble, create, colorful, masterpiece

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