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‘We may be able to watch dark energy turn on’: U-M involved in unprecedented sky survey

By Guest PostSeptember 6, 2013Sciencealbert einstein, astronomical observatory, cerro tololo, Chile, chris miller, cosmic scales, cosmological constant, cosmos, dark energy camera, dark energy survey, dark matter, david gerdes, earth, empty space, energy density, evolution, expansion, galaxy cluster, general relativity, mysterious force, reidar hahn, sky, tim mckay, university of michigan

ANN ARBOR — Moonless nights outside the Cerro Tololo astronomical observatory in Chile are so dark that when you look down, you can’t see your feet.

“You can’t see your hands,” said David Gerdes, physics professor at the University of Michigan. “But you can hold them up to the sky and see a hand-shaped hole with no stars in it. It’s really incredible.”

From this site in the Andes over the next five years, an international team will map one-eighth of the sky in unprecedented detail—aiming to make a time lapse of the past 8 billion years of a slice of the universe. Through the Dark Energy Survey, which began Aug. 31, more than 200 researchers from 25 institutions, including U-M, will search for answers to a fundamental question about the cosmos: Why is its expansion speeding up? (more…)

Global study stresses importance of public Internet access

By Guest PostJuly 28, 2013Technologyaraba sey, Bangladesh, bogota, botswana, brazil, Chile, chris coward, Colombia, computer users, computers and internet, ghana, global study, information school, learning internet skills, lithuania, mobile phones, Philippines, public computer, public internet access, source of internet, South Africa, technology skills, university of washington

Millions of people in low-income countries still depend on public computer and Internet access venues despite the global proliferation of mobile phones and home computers. However, interest in providing such public access has waned in recent years, especially among development agencies, as new technologies become available.

But a five-year, eight-country study recently concluded by the Technology & Social Change Group at the University of Washington Information School has found that community access to computer and Internet technology remains a crucial resource for connecting people to the information and skills they need in an increasingly digital world. (more…)

The New Face of Mining: Women Carving Out a Place in Surging Industry

By Guest PostMay 28, 2013Economy, Generalalabama, Antarctica, assessment, barb filas, barrick in nevada, bree mcmaster, brute force image, Chile, coal mines, earth, Economy, environmental impact, exploration, female engineers, female mine manager, geological engineering, girl scouts, global mining firm, illinois, job, knight piesold, mary poulton, metallurgy, mine sites, mining, new face, rita riggs, ruby barickman, san xavier, skilled workers, society for mining, student mine, underground, us schools, vicki seppala, women, work environment, x chromosomes

The UA department of mining and geological engineering, one of only 14 U.S. schools offering mining engineering degrees and only a handful with its own student mine, is dedicated to helping fill the industry pipeline, and that includes ensuring female engineers continue to gain ground in a surging industry.

They roam the remotest corners of the world, scale the highest mountains and descend deep into the Earth.

They go places few women have ever gone. They are not afraid of getting dirty, or of much else for that matter, certainly not adversity or a good challenge. And they know, better than most, how and when to take a joke. (more…)

UW students create, harvest fog in campus ‘hoop house’

By Guest PostMarch 20, 2013Education, Environmentben spencer, botany greenhouse, canadian, Chile, doug ewing, economic systems, fog, fog chamber, fog collectors, green space, greenhouse, harvesting water, hoop house, irrigation, low cost materials, mike schwindeller, non profit fogquest, peru, plant vineyards, plants, power washer, rain falls, shu kuei, spanish colonizer, susan bolton, university of washington, vines, water condenses

In the fog chamber, a thick cool mist rolls from one end to the other blurring glasses, wetting caps and coats and sending water dripping down the latest test panel.

University of Washington students have been testing low-cost materials capable of harvesting water from fog in a temporary “hoop house” next to the Botany Greenhouse. They create the fog with a specially adapted power washer and record how much water condenses and drips off various panels of low-cost materials, such as shade cloth. (more…)

‘Nuisance’ Data Lead to Surprising Star-Birth Discovery

By Guest PostMarch 15, 2013Sciencealma, Antarctica, atacama, atacama desert, baby picture, Chile, cosmic microwave background, early universe, earth, electromagnetic spectrum, history, joaquin vieira, john carlstrom, large millimeter array, northern hemisphere, nuisance data, population, radio galaxies, sky, south pole telescope, star birth discovery, star forming galaxies, sub millimeter wavelengths, universe, university of chicago

When a batch of bright cosmic objects first appeared in maps in 2008 made with data from the South Pole Telescope, astronomers at the University of Chicago’s Kavli Institute for Cosmological Physics regarded it only as an unavoidable nuisance.

The light sources interfered with efforts to measure more precisely the cosmic microwave background—the afterglow of the big bang. But the astronomers soon realized that they had made a rare find in South Pole Telescope’s large survey of the sky. The spectra of some of the bright objects, which is the rainbow of light they emit, were inconsistent with what astronomers expected from the well-known population of radio galaxies. (more…)

NASA’s Galex Reveals the Largest-Known Spiral Galaxy

By Guest PostJanuary 11, 2013Scienceall sky survey, baerbel koribalski, barred spiral galaxy, biggest stellar system, brazil, california, catholic university, cathy horellou, Chile, claudia mendes, constellation pavo, de, dimitri gadotti, disk galaxy, duilia de mello, dwarf galaxy, eli dwek, european southern observatory, fernanda urrutia viscarra, fossil record, galactic encounter, galaxy evolution explorer, galex, goddard, gravitational interaction, greenbelt, ic 4970, institute of technology, largest, milky way galaxy, mission, NASA, ngc 6872, oliveira, onsala space observatory, pasadena, rafael eufrasio, sao paulo, space flight center, spiral arms, star formation, stellar population, Sweden, two micron, united states, university, very large telescope

PASADENA, Calif. — The spectacular barred spiral galaxy NGC 6872 has ranked among the biggest stellar systems for decades. Now a team of astronomers from the United States, Chile and Brazil has crowned it the largest known spiral, based on archival data from NASA’s Galaxy Evolution Explorer (GALEX) mission, which has since been loaned to the California Institute of Technology in Pasadena.

Measuring tip-to-tip across its two outsized spiral arms, NGC 6872 spans more than 522,000 light-years, making it more than five times the size of our Milky Way galaxy. (more…)

Argentina Ranks First in Worldwide Desktop Social Networking Engagement at Nearly 10 Hours per Visitor Each Month

By Guest PostDecember 20, 2012Technologyalejandro fosk, analysis, Argentina, ask, brazil, Chile, Comscore, Facebook, hi5, latin america, leading social network, level of engagement, linkedIn, market, Mexico, peru, slideshare, social networking activity, social networking markets, tumblr

Analysis of Social Networking in Latin America Shows LinkedIn Grabbing #2 Position with35 Million Monthly Visitors

Santiago, Chile, December 20, 2012 – comScore, a leader in measuring the digital world, today released an analysis of social networking activity in Latin America, which found that Argentina and Brazil led as the most engaged social networking markets worldwide with visitors spending an average of near 10 hours on social networking sites in November 2012. The study also found that LinkedIn, which has grown strongly in the past year due to both organic growth and the acquisition of Slideshare.net, is now the second most visited social network in Latin America. (more…)

Search for Life Suggests Solar Systems More Habitable than Ours

By Guest PostDecember 7, 2012Sciencecayman unterborn, Chile, dataset, dynamic, earth, european southern observatory, Galaxy, geologically active, habitable, habitable zone, heat source, jennifer johnson, microbial form, Milky Way, ohio state university, planet, plate tectonics, potassium, radioactive decay, radioactive element, san francisco, search for life, solar systems, solar twin, subsurface heat, terrestrial planet, thorium, uranium, wendy panero

SAN FRANCISCO — Scattered around the Milky Way are stars that resemble our own sun—but a new study is finding that any planets orbiting those stars may very well be hotter and more dynamic than Earth.

That’s because the interiors of any terrestrial planets in these systems are likely warmer than Earth—up to 25 percent warmer, which would make them more geologically active and more likely to retain enough liquid water to support life, at least in its microbial form.

The preliminary finding comes from geologists and astronomers at Ohio State University who have teamed up to search for alien life in a new way. (more…)

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