Heavens

Hubble confirms cosmic acceleration with weak lensing

Hubble confirms cosmic acceleration with weak lensing

A group of astronomers [1], led by Tim Schrabback of the Leiden Observatory, conducted an intensive study of over 446 000 galaxies within the COSMOS field, the result of the largest survey ever conducted with Hubble. In making the COSMOS survey, Hubble photographed 575 slightly overlapping views of the same part of the Universe using the Advanced Camera for Surveys (ACS) onboard Hubble. It took nearly 1000 hours of observations.

02W renamed Tropical Storm Omais, staying at sea

02W renamed Tropical Storm Omais, staying at sea

Tropical Cyclone 02W still has maximum sustained winds near 46 mph but one thing changed: it has been named "Omais."

Greenland ice sheet losing mass on northwest coast

Greenland ice sheet losing mass on northwest coast

Ice loss from the Greenland ice sheet, which has been increasing during the past decade over its southern region, is now moving up its northwest coast, according to a new international study.

Tropical Storm 02W leaves Guam and Micronesia with high surf and swells

Tropical Storm 02W leaves Guam and Micronesia with high surf and swells

The National Weather Service in Guam has posted advisories for small craft advisories and high surf advisories for Guam and the surrounding region, including Micronesia. NASA's Aqua and TRMM satellites captured two views of limited areas of convection in the storm today.

NASA's Aqua Satellite sees a tight Tropical Storm 21S

NASA's Aqua Satellite sees a tight Tropical Storm 21S

The Southern Indian Ocean is still warm enough to enable tropical cyclones to form, and Tropical Cyclone 21S did just that today. NASA's Aqua satellite captured infrared and visible images of 21S and the infrared showed some limited areas of strong convection, while the visible image showed a very small, compact storm.

At 900 UTC (5 a.m. EDT) today, March 23, Tropical Cyclone 21S was located about 505 miles west of Cocos Island near 12.9 degrees South latitude and 88.3 degrees East longitude.

Notion of 'group think' questioned

A University of Alberta researcher is questioning the notion of "group think"— a common psychological phenomenon—that has been used to explain some of the extreme things people do once they are within the confines of a group. Rob Wilson, a professor in the Department of Philosophy, rejects the popular idea that groups tend to have a mind of their own and says the notion of a collective mind is problematic.

IBD patients have few credible online resources on treatment options

Few Web sites provide high-quality patient information about treatment options for Crohn's disease and ulcerative colitis, according to a new study in Clinical Gastroenterology and Hepatology, the official journal of the American Gastroenterological Association (AGA) Institute.

Explained: Why many surveys of distant galaxies miss 90 percent of their targets

Astronomers have long known that in many surveys of the very distant Universe, a large fraction of the total intrinsic light was not being observed. Now, thanks to an extremely deep survey using two of the four giant 8.2-metre telescopes that make up ESO's Very Large Telescope (VLT) and a unique custom-built filter, astronomers have determined that a large fraction of galaxies whose light took 10 billion years to reach us have gone undiscovered. The survey also helped uncover some of the faintest galaxies ever found at this early stage of the Universe.

New approach to water desalination

A new approach to desalination being developed by researchers at MIT and in Korea could lead to small, portable desalination units that could be powered by solar cells or batteries and could deliver enough fresh water to supply the needs of a family or small village. As an added bonus, the system would also remove many contaminants, viruses and bacteria at the same time.

Virtual biopsy probe system is 'almost perfect' in detecting precancerous polyps during colonoscopy

JACKSONVILLE, Fla. — The newest generation of "virtual biopsy" colonoscopy probes being tested at the Mayo Clinic campus in Florida demonstrate that it might soon be possible to use such a device to determine whether a colon polyp is benign and not remove it for biopsy. Currently, all colon polyps are extracted during a colonoscopy and sent to a pathologist for examination, which adds time, expense, and some surgical risk, to the procedure.