WASHINGTON -- The launch of NASA's Glory spacecraft from Vandenberg Air Force Base in California has been postponed at least 24 hours.
Heavens
NASA's Chandra X-ray Observatory has discovered the first direct evidence for a superfluid, a bizarre, friction-free state of matter, at the core of a neutron star. Superfluids created in laboratories on Earth exhibit remarkable properties, such as the ability to climb upward and escape airtight containers. The finding has important implications for understanding nuclear interactions in matter at the highest known densities.
A University of Alberta astronomer has glimpsed the inner working of a neutron star and found a unique world where the physics can be described as "weird." Craig Heinke's team found the neutron star's core contained a superfluid, a friction-less liquid that could seemingly defy the laws of gravity.
"If you could put some of this superfluid in a jar it would flow up the walls of the container and over the edge," said Heinke.
A new study by Dr. Zoë Lindo, a post-doctoral fellow in the Department of Biology at McGill University, and Jonathan Whiteley, a doctoral student in the same department, shows that large, ancient trees may be very important in helping forests grow.
COLLEGE PARK, Md. -- Recent data for gas rich galaxies precisely match predictions of a modified theory of gravity know as MOND according to a new analysis by University of Maryland Astronomy Professor Stacy McGaugh. This -- the latest of several successful MOND predictions -- raises new questions about accuracy of the reigning cosmological model of the universe, writes McGaugh in a paper to be published in March in Physical Review Letters.
According to a study by Silvia Stringhini and colleagues from INSERM, (U1018 Centre for Research in Epidemiology and Population Health) and University College London, (Department of Epidemiology and Public Health), published in this week's PLoS Medicine, although socioeconomic status and health behaviors are strong predictors of mortality, there are major differences in the social patterning of unhealthy behaviors in different countries.
PROVIDENCE, R.I. [Brown University] — Knowing that it is impossible to catalog all the carcinogenic exposures a person has had in life and then assess them, Brown University researcher Carmen Marsit is looking for a more precise way to predict individual susceptibility to cancer. In a paper published online Feb. 22, 2011, in the Journal of Clinical Oncology, Marsit leads a team of scientists in describing a blood test that can accurately detect biomolecular markers of bladder cancer that risky exposures may have left behind.
Alexandria, VA – In the back alleys of the world's capitals and the ballrooms of presidential palaces exists a black market that preys on the imagination of some and the greed of others. These black-market items are not of this world: They are moon rocks, collected decades ago by six Apollo missions and three unmanned Soviet missions to the moon.
A $28 million University of Colorado Boulder instrument developed to study changes in the sun's brightness and its impact on Earth's climate is one of two primary payloads on NASA's Glory mission set to launch from Vandenberg Air Force Base in California on Feb. 23.
For centuries tansy has been used as a folk remedy, but now scientists from Britain and Spain believe the plant may have medical benefits after all, as a treatment for herpes. The team's findings, published in Phytotherapy Research, are the result of joint work between two teams to established scientific evidence for traditional medicines.
It is well known that sunbathing increases the risk of skin cancer and that this risk is increased in people with a family history of melanoma. New research published in BioMed Central's open access journal BMC Public Health shows that young people in this 'at risk' group are still ignoring sun safety advice.
Variations in skin color provide one of the best examples of evolution by natural selection acting on the human body and should be used to teach evolution in schools, according to a Penn State anthropologist.
"There is an inherent level of interest in skin color and for teachers, that is a great bonus -- kids want to know," said Nina Jablonski, professor and head, Department of Anthropology, Penn State. "The mechanism of evolution can be completely understood from skin color."
For Margot Parkes, Canada Research Chair in Health, Ecosystems and Society at the University of Northern British Columbia, watersheds are living systems that are essential for healthy communities.
"My research focuses on the relationships between ecosystems and health," says Parkes, who presents her work at the THINK CANADA Press Breakfast panel discussion today at AAAS. Originally trained as a medical doctor, Parkes says it is important to take a holistic view of the issue.
Using the super-sharp radio "vision" of astronomy's most precise telescope, scientists have extended a directly-measured "yardstick" three times farther into the cosmos than ever before, an achievement with important implications for numerous areas of astrophysics, including determining the nature of Dark Energy, which constitutes 70 percent of the Universe. The continent-wide Very Long Baseline Array (VLBA) also is redrawing the map of our home Galaxy and is poised to yield tantalizing new information about extrasolar planets, among many other cutting-edge research projects.
A powerful solar flare has ushered in the largest space weather storm in atleast four years and has already disrupted some ground communications on Earth, said University of Colorado Boulder Professor Daniel Baker, an internationally known space weather expert.