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…)
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…)
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…)
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…)
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…)
Researchers say Phoenix Cluster activity may cause scientists to rethink how galaxies evolve
A National Science Foundation-funded radio telescope in Antarctica has found an extraordinary galaxy cluster that may force astronomers to rethink how galaxy clusters and the galaxies that inhabit them evolve.
The galaxy cluster was discovered some 5.7 billion light years from Earth by the 10-meter wide South Pole Telescope (SPT) located at NSF’s Amundsen-Scott South Pole Station in Antarctica, which is funded by NSF’s Office of Polar Programs. (more…)
Astronomers report a baffling discovery never seen before: An extraordinary amount of dust around a nearby star has mysteriously disappeared.
“It’s like the classic magician’s trick — now you see it, now you don’t,” said Carl Melis, a postdoctoral scholar at UC San Diego and lead author of the research. “Only in this case, we’re talking about enough dust to fill an inner solar system, and it really is gone!”
“It’s as if the rings around Saturn had disappeared,” said co-author Benjamin Zuckerman, a UCLA professor of physics and astronomy. “This is even more shocking because the dusty disc of rocky debris was bigger and much more massive than Saturn’s rings. The disc around this star, if it were in our solar system, would have extended from the sun halfway out to Earth, near the orbit of Mercury.” (more…)
Long-forgotten coastal habitats reappeared, species unseen for years returned
The reappearance of long-forgotten habitats and the resurgence of species unseen for years may not be among the expected effects of a natural disaster.
Yet that’s exactly what researchers found in a study of the sandy beaches of south central Chile, after an 8.8-magnitude earthquake and devastating tsunami in 2010.
Their study also revealed a preview of the problems wrought by sea level rise–a major symptom of climate change. (more…)
