Dating isn't dead, it has just evolved, argues the author Moira Weigel in her book Labor of Love: The Invention of Dating. In fact, how people seek romance is directly related to how the economy changes. In this video by The Atlantic, she explains how romance has moved from the private to the public realm, the significance of dating apps, and why love is still a worthwhile pursuit.
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In Guangzhou, China, millions of mosquitoes are born at the Sun Yat-Sen University-Michigan University Joint Center of Vector Control for Tropical Disease in the hopes of finding a way to fight Zika. The lab's mosquitos are infected with a strain of Wolbachia pipientis, a bacterium that inhibits Zika and and other viruses by preventing the fertilization of eggs. Researchers at the center release infected mosquitos on Shazai island to mate with wild females, stopping the next generation. The lab claims there is 99% suppression of the population of Aedes albopictus or Asia tiger mosquito, the type known to carry Zika virus, after the first year of tests.
marco18678 posted a photo:
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At the E.O. Wilson Biophilia Center in East Freeport, Florida, children are learning about nature by experiencing it firsthand.
Developed by Walton County conservationist M.C. Davis in 2009, the Center sits on the 50,000-acre Nokuse Plantation. Paul Arthur, president of Nokuse Education Inc. and director of E.O. Wilson Biophilia Center for the past five years, describes it as an environmental education center.
“Our ultimate goal is to teach future generations about the importance of conservation, preservation, and restoration of the ecosystem,” Arthur says. “We want every student to leave a little bit of a naturalist.”
Through two- or four-day programs, the Center provides children with a “complete learning experience” that aims to give them an in-depth understanding of the Florida Panhandle's longleaf pine ecosystem, while also exposing them to the idea of conservation more broadly.
The Center's lesson plan aligns with Florida state standards and is adjusted yearly. With over 700 pages of curriculum written by its staff, the Biophilia Center targets 4th and 7th grade students, as standardized testing occurs in 5th and 8th grade. The students come to the Center from schools in its five surrounding counties—Okaloosa, Walton, Bay, Holmes, and Washington.
Each year the Center educates 5,200 students and averages more than 100 students every school day. It places a lot of emphasis on experiential learning; over 20 hands-on activities comprise 75 percent of the overall curriculum. These activities—led by team members with nicknames like Bluegill Jill, Tree Frog Tess, and Pine Tree Paul (Arthur)—include surveying with lasers to analyze topography and slope, water quality testing, and a gopher tortoise simulation class.
“My number one goal is to get students outside,” Arthur says. “We want to immerse them into the environment out here so they get excited about it.”
Their methods are working. In 2014, Columbus State University doctorate candidate Michael Dentzau conducted a two-year study on the effectiveness of the Biophilia Center. Dentzau had 4th grade students draw pictures of Florida's environment before and after they went. According to Arthur, before visiting the Center, students had a warped view of the outdoors, drawing “snow-peaked mountains with giraffes, elephants, and gorillas.” Following their visits to the Center, the students' drawings changed drastically.
“Not only did they draw it [accurately], they started labeling it: loblolly pine, gopher tortoise, eastern indigo, wire grass, turkey oak,” Arthur explains. “That's what really blew us away.”
Dentzau also interviewed students five months after the visit. Much to the Center's delight, they still remembered what they had learned.
“These kids were rattling off information to him that was amazing,” Arthur said. “It was amazing to hear that what we do is effective.”
The Center continues to serve students in northwestern Florida and promote the values of conservationism to the local community as a whole. Arthur notes that the Center hopes to provide a “complete learning experience” so students learn more than just facts.
“People don't understand that when you mess with the food web it affects everything,” he says. “We want the students to understand how important it is that we maintain that balance for the biodiversity of the planet.”
Read more from Paul Arthur and the E.O. Wilson Biophilia Center on Voices for Biodiversity.
Jaime Gordon is a sophomore at Duke University. She plans to declare a major in Cultural Anthropology and a minor in Political Science, while also working on a minor in Japanese and a certificate in Policy Journalism. Born in Jamaica, but raised in the United States, Jaime has always had an interest in how the human experience differs across cultural lines. She wants to travel as much as possible in between her semesters as a full-time student. Though her particular interests are in East Asia and Francophone Europe, Jaime hopes to visit all seven continents in pursuit of novel experiences, artsy photos, and the world's best ice cream.
Read more: Whatsworking, Environment, Food Waste, Hunger, Boston, Reclaim, Hunger Relief, Lovin' Spoonfuls, Food Rescue, Impact News
The Hubble telescope has captured images of a rare tadpole galaxy glittering with bursts of star formation, swimming in the black pond of space.…
Scientists are worried about how Britain's departure from the European Union would hurt the continent's mega-projects and its researchers. Scientific collaboration "should know no borders," says one.
Our thoughts are with the people of Istanbul today, following a gruesome terrorist attack that took place yesterday at the city's main airport. Istanbul is the largest metropolitan area in Turkey, with a population of more than 14 million people. This Overview was captured at night from the @iss. (at Istanbul, Turkey)
Small, poor towns in Texas were flooded with oil and gas workers just a few years ago, bringing a rush of business and prosperity to local economies. Then, seemingly just as soon as they appeared, they were gone again as oil prices tanked across the globe. This short film goes inside Dimmit County, where locals and experts are wondering whether any part of this short-lived success can be salvaged.
Van Alen Sessions is presented by Van Alen Institute with The Atlantic andCityLab. Season Two, “Power Lines,” is directed and produced by Kelly Loudenberg. The series is made possible with support from the National Endowment for the Arts, and is supported, in part, by public funds from the New York City Department of Cultural Affairs in partnership with the City Council. Connect with Van Alen Institute on vanalen.org.
select mixes by genre: | ![]() | ![]() | ![]() | ![]() |
00:00 | rhythm doctor | intro | truelove |
00:39 | grand larceny | body workin | b2 |
03:32 | rich pinder | hat play | d-vine |
07:26 | man without a clue | morning funk mix | clueless |
11:01 | roter lewis | get out of my life | nite grooves |
14:21 | juliet sikora | larry's garage | kitt ball |
19:15 | clio | dangerous | truesoul |
25:40 | be as deep | music makes me happy | plastic people |
32:22 | disk nation | saxophonists | cruise |
35:09 | rene amesz | like it deep | tiger |
41:34 | diskode | burp | moulton |
44:46 | move d | jus house | uzuri |
49:07 | lenny kiser | this time | moulton |
53:37 | soledrifter | soul groove | large |
57:35 | joi resh | here we go | kaleydo |
64:38 | rafa barrios | daledalehey | intec |
67:43 | alan de lanier | dance | mycrazything |
71:49 | soul divine | secret love | stereo flava |
74:54 | manuel sahagun | the 3rd advice | development |
81:13 | kerri chandler | mommy whats a record | downtown |
86:16 | kink | pocket piano | running back |
91:39 | x-press 2 | give it | skint |
My Planet Experience posted a photo:
The Griffon Vulture is a large raptor, inhabitant of the steep cliffs and rocky areas offering numerous cavities where it will nest.
The main cause of the rapid decline in the griffon vulture population is the consumption of poisoned baits set out by people. Wildlife conservation efforts have attempted to increase awareness of the lethal consequences of using illegally poisoned baits through education about the issue. It is very highly vulnerable to the effects of potential wind energy development and electrocution has been identified as a threat.
The flight of the Griffon Vulture is a real show of virtuosity. It soars during long moments, moving scarcely the wings, in an almost unperceivable and measured way.
© www.myplanetexperience.com
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Chevron sending up massive flares in Richmond is not the only sign things are getting hot for the oil giant on the run from a $11 billion verdict.
On June 19th, Chevron's Richmond refinery erupted a torrent of flames and black smoke into the air and terrified local residents. The community remembers all too well when 15,000 people were sent to the hospital when that same refinery exploded in 2012. Unfortunately, since then the public hospital in Richmond has closed. They can't afford another explosion as the closest public emergency room services are now thirty to forty minutes away in Oakland.
But that's not the only thing "on fire" at Chevron lately. Similar to the company's claims that it needs massive flares to burn off excess gas, Chevron claims there's "nothing to see here" as it tries to sell off US $5 billion in assets in its Burnaby oil refinery in British Columbia. But the company's actions and track record tell a different story. Realizing it was going to lose in its legal battle and be forced to accept responsibility for deliberately dumping 18 billion gallons of toxic waste into the Ecuadorian Amazon, Chevron instead sold off all its assets and fled that country. It's been a corporate criminal on the run ever since, but the law is finally catching up with Chevron in Canada.
In September, the Ecuadorian plaintiffs bolstered by a unanimous decision in their favor by Canada's Supreme Court will begin their trial to seize Chevron's Canadian assets to cover its US $11 billion debt to the affected communities in Ecuador.
Chevron currently holds approximately US $15 billion of assets in Canada, almost all of which is at risk due to this enforcement action. Chevron refuses to acknowledge its full liability to the SEC and to its shareholders, and this latest move may give a clue as to why. Unable to replicate its customary racist attacks against Ecuador's judiciary and legal system, Chevron has to dream up new methods in Canada.
The Ecuadorians have defeated Chevron in every single legal contest which has considered the evidence of their crimes in Ecuador (Chevron's singular victory a retaliatory RICO SLAPP suit in the US notoriously forbade any evidence of contamination in its proceedings and is still under appeal). The writing is on the wall in Canada, and Chevron is trying to slip out quietly and escape justice once again.
To make matters worse for the oil giant, a recent U.S. Supreme Court decision on the use of RICO may preemptively doom its defense before the Second Circuit Court of Appeals in New York. As respected appellate attorney Deepak Gupta wrote, the Supreme Court decision "further limits private RICO actions by requiring proof of a quantifiable, redressable and domestic injury something Chevron has steadfastly refuse to identify." The decision also made clear that the RICO statute could not be used to attack a final judgment from a foreign court, as Chevron has tried to do in the Ecuador case. Aaron Page, a U.S. lawyer for the Ecuadorians called it a "nail in the coffin" of Chevron's RICO case. He added, "Now, the Supreme Court has ruled you can't bring a RICO case, even a legitimate one, based on harm that took place abroad. This is another example of why Chevron's RICO case should have been thrown out on day one."
Bottom line on these developments: no matter how desperate it gets, Chevron can't hide its actions in Canada or its pollution in Ecuador or Richmond.
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Puma has collaborated with Designworks — BMW's for-hire design agency — to make a new shoe that pays homage to one of the stranger concept cars of the last decade.
The X-CAT DISC takes styling cues from BMW's GINA Light Visionary Model that debuted in 2008, a roadster with a seamless, silvery fabric pulled taut over a substructure where you'd normally expect metal panels. The car was ridiculous in all the ways you want a true concept car to be: when the swing doors opened, the cloth simply bunched up; when the headlights weren't needed, they disappeared behind cloth "eyelids." Whether you liked the design, you had to give credit to BMW for doing something radically different.
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LG's materials and components subsidiary, LG Innotek, has developed a new type of flexible, textile pressure sensor. The company has yet to commercialize the technology, but says it could be used in a number of industries, including healthcare and car manufacturing. The company points out that current pressure sensors are all inflexible and stiff, whereas LG's new design is made from a flexible, elastic material that means they can be seamlessly integrated into other products. It also detects pressure across the whole of its exterior — not just in specific points.
The company mentions a number of possible use cases for the pressure sensors, including:
Bacon infused vodka may not be everyone's cup of tea, but selling this improbable beverage in Oklahoma could land you in hot water.…
Read more: Nasa, Gif, Sls Test, Nasa Rocket Test, Rocket Booster, Space Launch System, Orion Spacecraft, Orion, Science News
The Public Accounts Committee has advised the UK government to take a more evidence-based approach when deciding spending on science projects, according to a report published today.…
The National Park Service is racing to record soundscapes each park that capture nature for the ear. "If we start to lose sounds of wilderness, we start to lose a piece of us," one scientist says.
Full Text:
Camera-equipped smartphones, laptops and other devices make it possible to share ideas and images with anyone, anywhere, often in real-time. But in our cameras-everywhere culture, the risks of accidentally leaking sensitive information are growing. Computer scientists at Duke University have developed software that helps prevent inadvertent disclosure of trade secrets and other restricted information within a camera's field of view by letting users specify what others can see.
Image credit: Duke University
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There are reasons to be interested in the other worlds even if they couldn't possibly harbor life. The hot, rocky planets, for example, offer rare and precious clues to the character and evolution of the early Earth. Numerical models show these exoplanets can change their chemistry by vaporizing rock-forming elements in steam atmospheres that are then partially lost to space.
Image credit: NASA
Will it be a hamburger or hummus wrap for lunch? When customers saw indications of a meal's calorie content posted online, they put fewer calories in their cart, a study finds.
Can a computer write a sonnet that's indistinguishable from what a person can produce? A contest at Dartmouth attempted to find out. With our online quiz, you too can give it a try.
1968 Belgian poster for THE PRODUCERS (Mel Brooks, USA, 1967)
Designer: unknown
Poster source: Posteritati
Happy 90th Birthday Mel Brooks!
The National Air and Space Museum will reopen the “Boeing Milestones of Flight Hall” July 1 in conjunction with the museum's 40th anniversary. The two-year renovation of the hall was made possible by a gift from Boeing. Several of the museum's most iconic artifacts will remain on view, and new ones have been added. The installation will also introduce GO FLIGHT, a digital experience designed to allow visitors to make connections with and between artifacts and to share the national collection beyond the walls of the museum.
A ceremony at 8:30 p.m. will celebrate the anniversary and reopening. “All Night at the Museum” will begin at 9 p.m. and will include activities throughout the night concluding at 10 a.m. July 2. To learn more, visit http://airandspace.si.edu/events/40th-birthday/.
This video shows the Smithsonian's Digitization Program Office 3D scanning three Milestones of Flight Aircraft at the National Air and Space Museum: Spirit of St. Louis, Bell X-1 and SpaceShipOne. Look for these models soon on http://3d.si.edu for viewing and download! #SIx3D and in the newly opened “Boeing Milestones of Flight Hall.”
The post Air and Space Museum's “Boeing Milestones of Flight Hall” Reopens July 1! appeared first on Smithsonian Insider.
Smithsonian staff scientist, Carlos Jaramillo (shown here), and Bruce McFadden from the Florida Museum of Natural History led a 5 year project to collect fossils from and understand the geology of the Panama Canal expansion earthworks. (Photo by Sean Mattson, STRI staff photographer)
The Smithsonian Tropical Research Institute (STRI) celebrated with Panama the completion of the Panama Canal expansion project on June 26, 2016. The $5.6 billion engineering effort allows ships with triple the carrying-capacity of current vessels to transit the canal. The enterprise gave Smithsonian scientists unique opportunities to study two global-scale experiments: a natural, intercontinental land bridge bisected by a man-made, inter-oceanic pathway. They studied fossils, invasive species, whale migration routes, environmental services and changing climate.
STRI staff scientist Carlos Jaramillo along with Bruce McFadden, curator of vertebrate paleontology at the Florida Museum of Natural History, led the five-year Panama Canal Paleontology Project funded by the U.S. National Science Foundation to salvage fossils uncovered by the earthmovers. The fossils reveal ancient migrations of flora and fauna between North and South America and include new species such as Panamacebus transitus, the earliest monkey found in North America. Excavations expose an unusually complete view of the geology of the isthmus' formationthis record of global transformation of ocean currents, weather patterns and ecosystems would otherwise have remained buried under rock and rainforest.
The canal expansion reopens questions about whether exotic species will cross the freshwater corridor to establish themselves on the other side, potentially disrupting the existing ocean ecosystems. Former STRI director Ira Rubinoff argued in the 1960s that maintaining a freshwater bridge between oceans sharply reduced the risk of invasions likely with a sea-level canal, since most marine organisms cannot withstand abrupt changes in salinity. Staff scientist Mark Torchin asks if exotic speciesand their parasites — will be helped or hindered by increased ship traffic arriving daily from around the world.
Nearly 17,000 commercial vessels cross the Gulf of Panama each year. Staff scientist Hector Guzman's studies of humpback whale migration led the government of Panama to propose a “traffic separation scheme” to the International Maritime Organization. Ships in the Bay of Panama now reduce their speed and come into the Pacific entrance to the Canal through a narrow shipping lane. Researchers expect this to reduce the probability of collisions between ships and whales by 95 percent.
Catalina Pimiento was able to do her Ph.D. thesis at the University of Florida, excavating teeth of the largest shark ever, from the Panama Canal expansion earthworks. (STRI photo)
To study the Canal's freshwater heartbeat scientists turn to its source — the surrounding forests. The Republic of Panama established Soberania National Park and additional protected areas to conserve the forested watersheds that supply the canal with its lifeblood. At the Agua Salud project located near Soberania, staff scientist Jefferson Hall and colleagues ask how native tree species in lowland tropical forests regulate water flow through soil, help maintain biodiversity and store carbon. The project recently collaborated with the BIO Program of the Inter-American Development Bank to produce the free, online publication, Managing Watersheds for Ecosystem Services in the Steepland Neotropics.
“Climate change increases the likelihood of extreme weather, such as intense storms and droughts,” said Matthew Larsen, director of STRI. “We don't fully understand how the hydrologic and other natural systems in the Panama watershed will respond. STRI's ongoing scientific investigations help the Panama Canal Authority and land-use managers to better understand the range of future conditions.”
Last year's El Niño put the risk of water shortages in the canal into sharp relief. STRI monitoring stations throughout the region contribute to understanding such events. STRI maintains more than a dozen research facilities throughout Panama, including the Punta Galeta Marine Education Center near the Caribbean entrance to the canal and the Pacific-side Punta Culebra Nature Center. Both are open to the public, offering exhibits and educational tours.
STRI's presence in Panama has always been intertwined with the canal. From 1910 to 1912, the Smithsonian's Panama Biological Survey resulted in the first inventory of species and assessment of environmental conditions across the canal watershed. Panama's President Pablo Arosemena encouraged scientists to extend their survey throughout the country, creating an important baseline for understanding the wealth and diversity of the region's natural resources. The Barro Colorado Island research station was established in Lake Gatun, then newly flooded, in 1923. In 2016, along with Panama and the world, STRI looks forward to the fresh pulse that marks the completion of the canal expansion project.
The post Smithsonian celebrates Panama Canal expansion! appeared first on Smithsonian Insider.
By combining data from Chandra and several other telescopes, astronomers have identified the true nature of an unusual source in the Milky Way galaxy. This discovery implies that there could be a much larger number of black holes in the Galaxy that have previously been unaccounted for. For about two decades, astronomers have known about an object called VLA J213002.08+120904 (VLA J2130+12 for short). Although it is close to the line of sight to the globular cluster M15, most astronomers had thought that this source of bright radio waves was probably a distant galaxy.
Thanks to recent distance measurements with an international network of radio telescopes, including the EVN (European Very Long Baseline Interferometry Network) telescopes, the NSF's Green Bank Telescope and Arecibo Observatory, astronomers realized that VLA J2130+12 is at a distance of 7,200 light years, showing that it is well within our own Milky Way galaxy and about five times closer than M15. A deep image from Chandra reveals it can only be giving off a very small amount of X-rays, while recent VLA data indicates the source remains bright in radio waves.
This new study indicates that VLA J2130+12 is a black hole a few times the mass of our Sun that is very slowly pulling in material from a companion star. At this paltry feeding rate, VLA J2130+12 was not previously flagged as a black hole since it lacks some of the telltale signs that black holes in binaries typically display.
"Usually, we find black holes when they are pulling in lots of material. Before falling into the black hole this material gets very hot and emits brightly in X-rays," said Bailey Tetarenko of the University of Alberta, Canada, who led the study. "This one is so quiet that it's practically a stealth black hole."
This is the first time a black hole binary system outside of a globular cluster has been initially discovered while it is in such a quiet state.
Hubble observations identified VLA J2130+12 with a star having only about one-tenth to one-fifth the mass of the Sun. The observed radio brightness and the limit on the X-ray brightness from Chandra allowed the researchers to rule out other possible interpretations, such as an ultra-cool dwarf star, a neutron star, or a white dwarf pulling material away from a companion star.
In the graphic below, the images on the left show X-rays from Chandra and an optical image from Hubble of a large area around the source VLA J2130+12, including M15. The images on the right show the source VLA J2130+12 that is bright in radio waves, but can only be giving off a very small amount of X-rays. These pieces of information indicate the source contains a black hole with a few times the mass of the Sun.
Because this study only covered a very small patch of sky, the implication is that there should be many of these quiet black holes around the Milky Way. The estimates are that tens of thousands to millions of these black holes could exist within our Galaxy, about three to thousands of times as many as previous studies have suggested.
"Unless we were incredibly lucky to find one source like this in a small patch of the sky, there must be many more of these black hole binaries in our Galaxy than we used to think," said co-author Arash Bahramian, also of the University of Alberta.
There are other implications of finding that VLA J2130+12 is relatively near to us. "Some of these undiscovered black holes could be closer to the Earth than we previously thought," said Robin Arnason, a co-author from Western University, Canada "However there's no need to worry as even these black holes would still be many light years away from Earth."
Sensitive radio and X-ray surveys covering large regions of the sky will need to be performed to uncover more of this missing population. If, like many others, this black hole was formed in the plane of the Milky Way's disk, it would have needed a large kick at birth to launch it to its current position about 3,000 light years above the plane of the Galaxy.
The Daily Galaxy via International Center for Radio Astronomy Research
Image Credit: X-ray: NASA/CXC/Univ. of Alberta/B.Tetarenko et al; Optical: NASA/STScI; Radio: NSF/AUI/NRAO/Curtin Univ./J. Miller-Jones) and ALMA Observatory
Astronomers have long known that organic molecules form in diffuse gas clouds floating between stars. It is thought that as the Solar System formed 4.6 billion years ago, some of these organic molecules were transported from interstellar space to the planet forming disk. Later, these molecules played important roles in the chemical evolution resulting in the emergence of life on the Earth.
However, it is still unknown what kinds and quantities of organic molecules were actually supplied from interstellar space. Although radio astronomy observations during the last decade showed that saturated complex organic molecules, such as methanol (CH3OH) and methyl formate (HCOOCH3) [1], exist around Solar-type protostars, their distributions were too compact to be resolved with the radio telescopes available at the time.
With ALMA, an international team lead by Yoko Oya, a graduate student of Department of Physics, The University of Tokyo, and Nami Sakai, an associate chief scientist of RIKEN, studied the distribution of various organic molecules around a Solar-type protostar IRAS 16293-2422A at a high spatial resolution. They discovered a ring structure of complex organic molecules around the protostar. The radius of the ring is 50 times wider than the Earth's orbit. This size is comparable to the size of the Solar System, and the ring structure most likely represents the boundary region between infalling gas and a rotating disk structure around the protostar.
The observations clearly showed the distribution of large organic molecules methyl formate (HCOOCH3) and carbonyl sulfide (OCS). Apparently the distribution of methyl formate is confined in a more compact area around the protostar than the OCS distribution, which mainly traces the infalling gas. "When we measured the motion of the gas containing methyl formate by using the Doppler effect," said Oya "we found a clear rotation motion specific to the ring structure." In this way, they identified the rotating ring structure of methyl formate, although it is not resolved spatially. A similar ring structure is also found for methanol.
These saturated organic molecules are formed in interstellar space and are preserved on the surfaces of dust grains. Around the outer boundary of the disk structure, they evaporate due to shock generated by collisions of the disk and infalling material, and/or due to heating by the light from the baby star. This result is the first direct evidence that interstellar organic materials are indeed fed into the rotating disk structure that eventually forms a planetary system.
In 2014, the team found a similar ring structure of SO (sulfur monoxide) around another Solar-type protostar L1527. In this source, unsaturated complex organic molecules such as CCH and cyclic-C3H2 are very abundant in the infalling gas, while SO preferentially exists in the boundary between the infalling gas and the disk structure. Although the physical structure in L1527 is similar to that found in IRAS 16293-2422A, the chemical composition is much different. Saturated complex organic molecules are almost completely absent in L1527.
The present result, taken together with previous results on L1527, clearly demonstrates for the first time that the materials delivered to a planetary system differ from star to star. A new perspective on chemical composition is thus indispensable for a thorough understanding of the origin of the Solar System and the origin of life on the Earth.
The Daily Galaxy via National Institutes of Natural Sciences
A Southwest Research Institute-led team has discovered an elusive, dark moon orbiting Makemake, one of the "big four" dwarf planets populating the Kuiper Belt region at the edge of our solar system. The findings are detailed in the paper "Discovery of a Makemakean Moon," published in the June 27 issue of Astrophysical Journal Letters.
"Makemake's moon proves that there are still wild things waiting to be discovered, even in places people have already looked," said Dr. Alex Parker, lead author of the paper and the SwRI astronomer credited with discovering the satellite. Parker spotted a faint point of light close to the dwarf planet using data from Hubble's Wide Field Camera 3. "Makemake's moon -- nicknamed MK2 -- is very dark, 1,300 times fainter than the dwarf planet."
A nearly edge-on orbital configuration helped it evade detection, placing it deep within the glare of the icy dwarf during a substantial fraction of its orbit. Makemake is one of the largest and brightest known Kuiper Belt Objects (KBOs), second only to Pluto. The moon is likely less than 100 miles wide while its parent dwarf planet is about 870 miles across. Discovered in 2005, Makemake is shaped like football and sheathed in frozen methane.
"With a moon, we can calculate Makemake's mass and density," Parker said. "We can contrast the orbits and properties of the parent dwarf and its moon, to understand the origin and history of the system. We can compare Makemake and its moon to other systems, and broaden our understanding of the processes that shaped the evolution of our solar system."
With the discovery of MK2, all four of the currently designated dwarf planets are known to host one or more satellites. The fact that Makemake's satellite went unseen despite previous searches suggests that other large KBOs may host hidden moons.
Prior to this discovery, the lack of a satellite for Makemake suggested that it had escaped a past giant impact. Now, scientists will be looking at its density to determine if it was formed by a giant collision or if it was grabbed by the parent dwarf's gravity. The apparent ubiquity of moons orbiting KBO dwarf planets supports the idea that giant collisions are a near-universal fixture in the histories of these distant worlds.
The Daily Galaxy via Southwest Research Institute
"The dips found by Kepler are real. Something seems to be transiting in front of this star and we still have no idea what it is!" confirms German astronomer Michael Hippke. Even if aliens are not involved, Tabby's star remains "the most mysterious star in the universe" as Yale astronomer Tabetha Boyajian described it in a TED talk she gave last February.
The results of a new study make it far less likely that KIC 8462852, popularly known as Tabby's star, is the home of industrious aliens who are gradually enclosing it in a vast shell called a Dyson sphere. Media interest went viral last October when a group of astronomers from Pennsylvania State University released a preprint that cited KIC 8462852's "bizarre light curve" as "consistent with" a swarm of alien-constructed megastructures.
Public interest in the star, which sits about 1,480 light-years away in the constellation Cygnus, began last fall("Tabby") Boyajian and colleagues posted a paper on an astronomy preprint server reporting that "planet hunters" - a citizen science group formed to search data from the Kepler space telescope for evidence of exoplanets - had found unusual fluctuations in the light coming from the otherwise ordinary F-type star (slightly larger and hotter than the sun).
The most remarkable of these fluctuations consisted of dozens of uneven, unnatural-looking dips that appeared over a 100-day period indicating that a large number of irregularly shaped objects had passed across the face of the star and temporarily blocked some of the light coming from it.
The top panel of the graphic below shows four years of Kepler observations of the 12th-magnitude star KIC 8462852 in Cygnus. Several sporadic dips in its light output (normalized to 100%) hint that something is partially blocking its light. The portion highlighted in yellow, recorded in February to April 2013, is shown at three different scales along the bottom. The random, irregular shape of each dip could not be caused by a transiting exoplanet. (T. Boyajian & others / MNRAS).
The attention caused scientists at the SETI Institute to train its Alien Telescope Array on the star to see if they could detect any radio signals indicating the presence of an alien civilization. In November it reported finding "no such evidence" of signals with an artificial origin.
Then a study released in January by a Louisiana State University astronomer threw even more fuel on the fire of alien speculation by announcing that the brightness of Tabby's star had dimmed by 20 percent over the last century: a finding particularly difficult to explain by natural means but consistent with the idea that aliens were gradually converting the material in the star's planetary system into giant megastructures that have been absorbing increasing amounts of energy from the star for more than a century. That study has now been accepted for publication in the peer reviewed Astrophysical Journal.
However, a new study - also accepted for publication in the Astrophysical Journal - has taken a detailed look at the observations on which the LSU study was based and concluded there is no credible evidence that the brightness of the star been steadily changing over this period.
When the LSU study was posted on the physics preprint server ArXiv, it caught the attention of Vanderbilt doctoral student Michael Lund because it was based on data from a unique resource: Digital Access to a Sky Century @ Harvard. DASCH consists of more than 500,000 photographic glass plates taken by Harvard astronomers between 1885 and 1993, which the university is digitizing. Lund was concerned that the apparent 100-year dimming of Tabby's star might just be the result of observations having been made by a number of different telescopes and cameras that were used during the past century.
Lund convinced his advisor, Professor of Physics and Astronomy Keivan Stassun, and a frequent collaborator, Lehigh University astronomer Joshua Pepper, that the question was worth pursuing. After they began the study, the Vanderbilt/Lehigh group discovered that another team - German amateur astronomer Michael Hippke and NASA Postdoctoral Fellow Daniel Angerhausen - were conducting research along similar lines. So the two teams decided to collaborate on the analysis, which they wrote up and submitted to the Astrophysical Journal.
"Whenever you are doing archival research that combines information from a number of different sources, there are bound to be data precision limits that you must take into account," said Stassun. "In this case, we looked at variations in the brightness of a number of comparable stars in the DASCH database and found that many of them experienced a similar drop in intensity in the 1960's. That indicates the drops were caused by changes in the instrumentation not by changes in the stars' brightness."
The planet hunters first detected something unusual in the star's light curve in 2009. They found a 1 percent dip that lasted a week. This is comparable to the signal that would be produced by a Jupiter-sized planet passing in front of the star. But planets produce symmetric dips and the one they found was decidedly asymmetric, like something that would be produced by an irregular-shaped object like a comet.
The light from the star remained steady for two years, then it suddenly took a 15 percent plunge that lasted for a week.
Another two years passed without incident but in 2013 the star began flickering with a complex series of uneven, unnatural looking dips that lasted 100 days. During the deepest of these dips, the intensity of the light coming from the star dropped 20 percent. According to Boyajian it would take an object 1,000 times the area of the Earth transiting the distant star to produce such a dramatic effect.
"The Kepler data contains other cases of irregular dips like these, but never in a swarm like this," said Stassun.
Boyajian and her colleagues considered a number of possible explanations, including variations in the star's output, the aftermath of an Earth/Moon type planetary collision, interstellar clumps of dust passing between the star and earth, and some kind of disruption by the star's apparent dwarf companion. However, none of their scenarios could explain all of the observations. Their best explanation was a giant comet that fragmented into a cascade of thousands of smaller comets. (This hypothesis took a hit when the LSU study was announced because it could not explain a century-long dimming.)
The Kepler telescope is no longer collecting data in the Cygnus region, but Hippke reports that the mystery has captured the imagination of amateur astronomers around the world so thousands of them are pointing their telescopes at Tabby's star, snapping images and sending them to the American Association of Variable Star Observers in hopes of detecting further dips that will shed new light on this celestial mystery.
The Daily Galaxy via Vanderbilt University
"Unusual News" --From Around the Planet & Beyond (Sponsored Site)
europeanspaceagency posted a photo:
stronauts from five space agencies around the world are taking part in ESA's CAVES training course Cooperative Adventure for Valuing and Exercising human behaviour and performance Skills.
The two-week course prepares astronauts to work safely and effectively in multicultural teams in an environment where safety is critical.
As they explore the caves of Sardinia they will encounter caverns, underground lakes and strange microscopic life. They will test new technology and conduct science just as if they were living on the International Space Station. The six astronauts will rely on their own skills, teamwork and ground control to achieve their mission goals the course is designed to foster effective communication, decision-making, problem-solving, leadership and team dynamics.
This year is the first international space cooperation to involve astronauts from China, Russia, Japan, ESA and America, with cosmonaut Sergei Vladimirovich, ESA astronaut Pedro Duque, taikonaut Ye Guangfu, Japanese astronaut Aki Hoshide and NASA astronauts Ricky Arnold and Jessica Muir taking part.
After a week of training (pictured), the ‘cavenauts' will say goodbye to sunlight and spend six nights underground, setting up basecamp in the Sa Grutta cave in Sardinia, Italy.
Follow CAVES via twitter with #CAVES or on the CAVES blog .
Scientists have been trying to puzzle out for decades why the universe seems to weigh more than it should, and so far the answer points to dark matter—an invisible substance that they still don't clearly understand and is thought to exist in clumps throughout the universe. Dark matter, believed by physicists to outweigh all the normal matter in the universe by more than five to one, is by definition invisible. But, scientists at MIT and elsewhere have developed a new tool that could test to see if dark matter is detectable.
However, an exotic particle -a "dark photon"- that resembles a photon, but with mass, has been proposed by some theorists to explain dark matter — whose nature is unknown but whose existence can be inferred from the gravitational attraction it exerts on ordinary matter, such as in the way galaxies rotate and clump together.
“We're looking for a massive photon,” explains MIT physics professor Richard Milner. That may seem like a contradiction in terms: Photons, or particles of light, are known to be massless. If it does exist, that would represent a major discovery, Milner says. “It's totally beyond anything we understand about the physical world. A massive photon would be totally different” from anything allowed by the Standard Model, the bedrock of modern particle physics. "It's a tiny effect,” Milner adds, but “it can have enormous consequences for our theories and our understanding. It would be absolutely groundbreaking in physics.”
The experiment known as DarkLight, developed by MIT physics professor Peter Fisher and Milner in collaboration with researchers at the Jefferson National Accelerator Laboratory in Virginia and others, will look for evidence a massive dark photon with a specific energy postulated in one particular theory about dark matter, Milner says. If the planned experiment detects the A' particle, says Roy Holt, a distinguished fellow in the physics division at Argonne National Laboratory says, “it would signal that dark matter could actually be studied in a laboratory setting.”
Meanwhile, team of physicists at the University of California have uploaded on Arvix (the e-print archive with over 100,000 articles in physics) work done by a team in Hungary in 2015 that might have revealed the existence of this fifth force of nature. The Hungarian team, led by Attila Krasznahorkay, examined the possible existence of dark photons that work with dark matter. The Berkeley team has challenged the findings, suggesting that the new particle found by the Hungarian team was not a dark photon, but possibly a protophobic X boson, which might carry a super-short force which acts over just the width of an atomic nucleus.
To prove the existence of the theorized particle, dubbed A' (“A prime”), the Darklight experiment will use a particle accelerator at the Jefferson Lab that has been tuned to produce a very narrow beam of electrons with a megawatt of power. That's a lot of power, Milner says: “You could not put any material in that path,” he says, without having it obliterated by the beam. For comparison, he explains that a hot oven represents a kilowatt of power. “This is a thousand times that,” he says, concentrated into mere millionths of a meter.
The Jefferson Lab's Free Electron Laser, in Virginia, will bombard an oxygen target with a stream of electrons with one megawatt of power. This will be able to test for these massive photons at a mass-energy of up to 100 MeV. It is hoped that this hugely powerful beam of electrons will hit the target and create this theorized form of dark matter (A' particles). The dark matter, if it's created, will then immediately decay into two other particles that can be easily detected.
The MIT paper confirms that the new facility's beam meets the characteristics needed to definitively detect the hypothetical particle — or rather, to detect the two particles that it decays into, in precise proportions that would reveal its existence. Doing so, however, will require up to two years of further preparations and testing of the equipment, followed by another two years to collect data on millions of electron collisions in the search for a tiny statistical anomaly.
While DarkLight's main purpose is to search for the dark photon A' particle, it also happens to be well suited to addressing other major puzzles in physics, Milner says. It can probe the nature of a reaction, inside stars, in which carbon and helium fuse to form oxygen — a process that accounts for all of the oxygen that now exists in the universe.
“This is the stuff we're all made of,” Milner says, and the rate of this reaction determines how much oxygen exists. While that reaction rate is very hard to measure, Milner says, the DarkLight experiment could illuminate the process in a novel way: “The idea is to do the inverse.” Instead of fusing atoms to form oxygen, the experiment would direct the powerful beam at an oxygen target, causing it to split into carbon and helium. That, Milner says, would provide an indirect way of determining the stellar production rate.
In 2012, Simona Vegetti, a physics fellow at MIT, discovered an entire galaxy made of dark matter just outside the Milky Way. The dark galaxy may host a luminous galaxy made invisible by the dark matter. “The thing people like about dark matter is that it's been able to explain so many observations,” Vegetti said.
Because dark matter reflects no light, the galaxy is elusive. Vegetti worked with an international team of scientists including three from the U.S. and two from the Netherlands. Using the Keck Telescope in Hawaii, they detected the galaxy by studying ripples in the patterns of light rays from the Milky Way, a method known as gravitational lensing.
“It's a dark matter-dominated object,” Vegetti said, “So there might be stars but very little.”
There are thought to be more than 10,000 satellite galaxies attached to our Milky Way galaxy, but only 30 of them are visible, she said. The image above shows the Sagittarius Dwarf Galaxy, named for the constellation in which it is seen from the earth, in the process of colliding and merging with our own Milky Way. “The question becomes are these satellites missing because they don't exist or because they are purely dark? And that's one question we're trying to answer,” she said.
In the image at the top of the page, the bright source in the upper left is an active galaxy in the cluster, Abell 2142, six million light years across that contains hundreds of galaxies and enough gas to make a thousand more. It is one of the most massive objects in the universe.
The Daily Galaxy via MIT, Northwestern, and Physical Review Letters
Chris Forsyth captures Europe's overlooked underground spaces
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'je te pardonne' (I forgive you) is not intended as an homage, rather a search for humanity in the wake of tragedy.
The post monumental leila alaoui exhibition at galleria continua seeks to rediscover humanity appeared first on designboom | architecture & design magazine.
on the street-facing façade of a residential building, the artist has painted a brain-bending optical illusion that sees a wall seemingly penetrate a deep and dark abyss.
The post astro's brain-bending mural turns an apartment into an architectural wormhole appeared first on designboom | architecture & design magazine.
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kathybaca posted a photo:
Snowy Plover Fights for the Right to Exist.
Today's generation of fighter pilots could be the last of their breed, thanks to an AI system dubbed ALPHA that's proving unkillable in air combat.…
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Read more: Environment, Oceans, Finding Dory, Coral Reefs, Fish, Pollution, Green News
Let's be honest, these are challenging times to be a conservationist, animal lover, nature fan, outdoorsman…a human. No matter the label, one thing that we all share in common is a desire to feel wonder: a wonder that often arises from experiences in the natural world.
Somehow, just knowing that incredible creatures are out there, moving through landscapes that revolve unperceivably slowly on their own dials, without regard or subservience to man's hand, connects us to something deeper. It allows us to believe that it will all be okay. That life was here before, and so will it be in the future. Eternity.
As such, it somehow seems like a sacrilege to validate the worthiness of nature—of a species—by weights and measures, dollars and cents. Too often we impatiently demand to know what good it does for us, the conquerors, the victors, to whom the spoils go daily. As if a row of decimal points could ever serve as the demarcation line between gold and garbage, your own mother on auction like a prize pig at the county fair.
I first discovered the rusty-patched bumble bee in a box on a museum shelf at Great Smoky Mountains National Park. I was there to look at the spectral array of bees that were native to the region. While I quickly scanned the collection like an eager child on Christmas morning, Becky Nichols, the park entomologist, drew my attention to one species that hadn't been seen in the Smokies for years.
It wasn't flashy or particularly outstanding in appearance. Even amongst bumble bees it seemed rather dull and unassuming. Only a hint of a fading rusty band, an oxidized kiss of orange on its abdomen, gave a clue to the origin of its common name. It was a species that was once abundant throughout the eastern US and into the upper Midwest, but then it wasn't; nearly winking out before most people even knew it existed.
There was a stuffed passenger pigeon in the same room, staring off into space with its glass eyes. This was once the most numerous bird on the continent, but we eliminated it before we even suspected such a thing was possible. I wondered if the rusty-patched bumble bee, like the passenger pigeon, was another ghost in the making.
It was at that moment that I knew that I had to see a living rusty-patched bumble bee. I wanted to hear the deep thrum of its wings and know, really know, what it was like to behold its presence. If there was ever a precious natural commodity, this was the currency that held the most value to me. This pivotal moment sent me off along the path of an incredibly journey, which culminated in many unexpected, insightful experiences, and a short film that will hopefully give others a sense of what we stand to lose if this species fades into extinction.
In the film, University of Wisconsin entomologist Dr. Claudio Gratton sites a provocative paper that looks at the economic value of native bees. Pollination services are often used as a reason to protect bees and other native pollinators. However, this paper suggests that a core group of bees are responsible for the majority of crop pollination. We have nearly 4,000 species of native bees in North America, none of which are protected under the Endangered Species Act. If crop pollination is our only justification for which species get graced with our approval to continue to exist, what happens to those that have no obvious value to us? Perhaps, as Dr. Gratton so elegantly puts it, this says more about how we value life in general than anything else.
If you'd like to speak up for the protection rusty-patched bumble, a species that has declined 87 percent in the past 15 years, please consider signing our petition requesting that the U.S. Fish and Wildlife Service place it under the care of the Endangered Species Act.
We spend so much time and effort trying to make life better for ourselves. The least we can do is make life possible for this bee.
Learn more at www.rustypatched.com.
Clay Bolt is a Natural History and Conservation Photographer specializing in the world's smaller creatures. He regularly partners with organizations such as the National Geographic Society, National Wildlife Federation, and the Xerces Society for Invertebrate Conservation. He is an Associate Fellow in the International League of Conservation Photographers (iLCP), president-elect of the North American Nature Photography Association (NANPA), and co-founder (2009) of the international nature and biodiversity photography project, Meet Your Neighbours. His current major focus is on North America's native bees and the important roles that they play in our lives. Clay lives in Bozeman, Montana where he is the communications lead for WWF's Northern Great Plains Program. Visit www.claybolt.com to learn more.
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