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Astronomers using NASA's Chandra X-ray Observatory have discovered a burst of X-rays and cyclical pulsing from a white dwarf star that has just undergone a thermonuclear explosion. Chandra team member R. Mark Wagner of the Large Binocular Telescope Observatory analyzed the data that revealed the curious cyclical pulses in Nova Aquila's X-ray emission.
Astronomers for the first time have seen matter devoured by a supermassive black hole at the center of our galaxy. Nature today published UA's Fulvio Melia's comments about the discovery, and Melia will talk on about it Sept. 10 for the Steward Public Evening Lecture series.
A Bell Lab physicist who led development of pure organic crystals and the first electrically pumped organic laser will open the fall Optics Valley Lecture Series Wednesday, Sept. 5.
Computers five or 10 years from now will run a thousand times faster than they do today. UA scientists help lead a national effort to develop these supercomputing tools for probing nature's most complex fundamental processes.
Photovoltaics - the high-tech approach to converting sunlight to electricity - could be low cost and widely practical if based on organic "self-assembling" thin film technologies, UA scientists say. Funded with new grants totaling more than $1 million, they believe that simple, safe, inexpensive solar cells may generate electricity in the not-too-distant future.
Gila County, Arizona educators are hoping "Risky Business,"an interactive CD game designed to take teen-agers out on a virtual date, can help teens become more aware of the consequences of a rushed decision.
Scientists for the first time can directly measure the height and motion of clouds over Earth from pole to pole. The new technique could be used to improve weather forecasts, say Roger Davies and Akos Horvath of UA atmospheric sciences.
He seems too easy-going to organize and lead 14 UA engineering students to victory in the world's longest solar car race. But Colin O'Connor's placid veneer wraps a sinewy will that took him to the lab 60 hours a week during the semester and 14 hours a day, seven days a week, when school was out.
Walk through the hallways of Biological Sciences East and you'll find fish eyes blandly staring back at you, furry vermin baring their teeth, and birds eyeing you guardedly. Don't panic. You're in Arizona's largest zoological archive.
Scientists may have found the largest flood channels in the solar system on Mars. At their peak, the vast channels discharged perhaps 50,000 times the flow of the Amazon River, forming a large ocean postulated for northern Mars in about eight weeks.