Heavens

NASA's infrared satellite imagery shows a stronger Typhoon Songda

Songda is now a typhoon in the Northwestern Pacific Ocean as it continues tracking parallel to the eastern coast of Luzon, Philippines. Infrared satellite imagery from NASA's Aqua satellite revealed that the storm has a much tighter low-level circulation center than it did yesterday.

NASA's Aqua satellite passed over Typhoon Songda earlier today, May 24 at 04:29 UTC (12:49 a.m. EDT) and the Atmospheric Infrared Sounder (AIRS) instrument captured an infrared look at the storm's cloud top temperatures and warm waters surrounding it.

ESO's VLT finds a brilliant but solitary superstar

An international team of astronomers [1] has used ESO's Very Large Telescope to carefully study the star VFTS 682 [2] in the Large Magellanic Cloud, a small neighbouring galaxy to the Milky Way. By analysing the star's light, using the FLAMES instrument on the VLT, they have found that it is about 150 times the mass of the Sun. Stars like these have so far only been found in the crowded centres of star clusters, but VFTS 682 lies on its own.

Discovery of a very massive, isolated star in a nearby galaxy

Astronomy & Astrophysics is publishing the discovery of a very massive, isolated star in a galaxy near our Milky Way. Located in the Large Magellanic Cloud (LMC), the star VFTS 682 is one of the more massive stars ever known, because it is about 150 times the mass of the Sun. But the major surprise is that the star lies on its own and is not a member of a densestar cluster.

Increasing daily calcium will not reduce the risk of fractures in later life

While moderate amounts of calcium (around 700 mg a day) are vital for maintaining healthy bones, there is no need to start increasing calcium intake in order to reduce the risk of fractures or osteoporosis in later life, finds a paper published on bmj.com today.

As people age, their bones lose calcium and they are more at risk of fractures and osteoporosis - this is especially the case for women. As well as causing individual suffering, fractures are a huge drain on health services.

H1N1 study shows closing schools, other measures effective

TEMPE (May 24, 2011) - Schools were closed, restaurants shuttered and large public gatherings cancelled.

The H1N1 virus was new, and most of the cases occurred among young people. Health professionals and scientists weren't sure at the onset what the world would encounter with the virus.

Kepler's astounding haul of multiple-planet systems

NASA's Kepler spacecraft is proving itself to be a prolific planet hunter. Within just the first four months of data, astronomers have found evidence for more than 1,200 planetary candidates. Of those, 408 reside in systems containing two or more planets, and most of those look very different than our solar system.

How to learn a star's true age

For many movie stars, their age is a well-kept secret. In space, the same is true of the actual stars. Like our Sun, most stars look almost the same for most of their lives. So how can we tell if a star is one billion or 10 billion years old? Astronomers may have found a solution - measuring the star's spin.

"A star's rotation slows down steadily with time, like a top spinning on a table, and can be used as a clock to determine its age," says astronomer Soren Meibom of the Harvard-Smithsonian Center for Astrophysics.

Mathematically ranking ranking methods

In a world where everything from placement in a Google search result to World Cup eligibility depends on ranking and numerical ratings of some kind, it is becoming increasingly important to analyze the algorithms and techniques that underlie such ranking methods in order to ensure fairness, eliminate bias, and tailor them to specific applications.

Expanded VLA flexing new scientific muscle

A new and uniquely powerful tool for cutting-edge science is emerging on the crisp, high desert of western New Mexico. Outwardly, it looks much the same as the famed Very Large Array (VLA), a radio telescope that has spent more than three decades on the frontiers of astronomical research. The 27 white, 230-ton dish antennas still peer skyward, the 72 miles of railroad track still wait to transport the antennas across the arid plains, the familiar buildings remain, and crews still fan out across the desert to service the antennas.

Feuding helium dwarfs exposed by eclipse

Researchers at the University of Warwick have found a unique feuding double white dwarf star system where each star appears to have been stripped down to just its helium.

We know of just over 50 close double white dwarfs but this was only the second ever eclipsing close white dwarf pair to be found. The University of Warwick astronomers Steven Parsons and Professor Tom Marsh were able to use the fact that the stars eclipse each other when seen from Earth to make particularly detailed observations of the system.

Beyond the barn: Keeping dairy cows outside is good for the outdoors

Computer simulation studies by scientists at the U.S. Department of Agriculture (USDA) suggests that a dairy cow living year-round in the great outdoors may leave a markedly smaller ecological hoofprint than its more sheltered sisters.

Nearby supernova factory ramps up

A local supernova factory has recently started production, according to a wealth of new data from NASA's Chandra X-ray Observatory on the Carina Nebula. This discovery may help astronomers better understand how some of the Galaxy's heaviest and youngest stars race through their lives and release newly-forged elements into their surroundings.

Medicare improved Canadian doctors' salaries: Queen's University study

U.S. doctors might find that their incomes start to rise – not decline – when Barack Obama's healthcare reforms are put in place says a Queen's University School of Medicine professor.

"The medical-income argument in the United States against moving toward a Canadian-style system is feeble," says Jacalyn Duffin, a medical doctor who specializes in the history of medicine. "Physicians' incomes grew more quickly than those of other Canadian professions following Medicare. The universal, single-payer system has been good not only for Canadians but also for Canada's doctors."

Amelia Fraser-McKelvie discover Universe's missing mass not-so-missing

A Monash student has made a breakthrough in the field of astrophysics, discovering what has until now been described as the Universe's 'missing mass'. Amelia Fraser-McKelvie, working within a team at the Monash School of Physics, conducted a targeted X-ray search for the matter and within just three months found it – or at least some of it.

NASA sees Tropical Storm Songda singing of rain and gusty winds for the Philippines

"Rainy days and Mondays" is the song that the residents of the northern Philippines do not want to hear if it involves the approaching Tropical Storm Songda. The Carpenters song was a hit, but a hit from Songda is making residents of the Philippines nervous as NASA's Aqua satellite has been watching the progression and intensification of the storm over the last several days.