Researchers measured the velocity of gases ejected during an early phase of supernova formation, allowing them to tie its formation to the star's evolutionary phases. The study found that the entire nebula is at least 200,000 years old and probably several times older.
Astronomers produce high-resolution images of Jupiter's auroras, revealing details about the planet's atmosphere and its moons. The new images, made possible by improved instruments on the Hubble Space Telescope, show comet-shaped swaths of light and a faint electromagnetic footprint from Ganymede.
Purdue University researchers are constructing a Mach 6 wind tunnel to study supersonic airflow and its effects on aircraft. The new facility will conduct experiments in airstreams traveling at six times the speed of sound, producing a quiet-flow Reynolds number of 13 million.
Researchers studied 40 distant supernovae to measure the cosmic expansion rate, finding it will expand forever due to insufficient mass for gravity to slow it down. Type Ia supernovae provide natural mile-markers to track trends in the universe's expansion.
A study published in the New England Journal of Medicine found a strong association between financial conflicts of interest and authors' positions on the safety of calcium-channel blockers. Researchers analyzed 70 articles and found that supportive authors were more likely to have financial relationships with pharmaceutical manufacture...
Researchers at Lawrence Berkeley National Laboratory create first 3-dimensional atomic model of tubulin, a protein essential for cell division and material transport. The model reveals the structure of tubulin's three functional components and its interaction with anti-cancer drug taxol.
A Cornell University study reveals that refugees who are desperate for salt, soap, and other essential supplies are more likely to sell or barter food. The poorest families were twice as likely to engage in these practices due to their limited access to nutritious food.
Researchers directly observed the 'healing' process of an earthquake fault in California's Mojave Desert. The post-quake 'healing' restores the Earth's crust stiffness and renews resistance to rupture. The study provides insights into the faulting cycle, strain accumulation, and fluid presence controlling earthquakes.
Researchers at Columbia University have linked a particular odor to the proteins in the human nose that detect it for the first time. They matched the smell of meat to a specific protein in rat nerve cells, shedding light on how the sense of smell works.
Researchers at Cornell University's College of Veterinary Medicine are studying the causes of cancer using ACS grants. The studies focus on understanding growth-factor signaling pathways and retroviral viruses that cause skin tumors in fish.
Researchers found a brain region thought to control language is proportionately the same size in humans and chimpanzees, challenging a long-standing theory. The planum temporale, located beneath the parietal cortex, demonstrates similar asymmetry in both species, raising questions about chimp communication.