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New nanoparticles make blood clots visible

For almost two decades, cardiologists have searched for ways to see dangerous blood clots before they cause heart attacks. Now, researchers at Washington University School of Medicine in St. Louis report that they have designed nanoparticles...

February 2011 Geosphere highlights

Boulder, CO, USA - The February 2011 Geosphere includes two articles designated for the latest Geosphere theme, "New developments in Grenville geology: In honor of James McLelland." Other topics include 3-D characterization of rocks, ash, minerals, ...

Swift survey finds ‘missing’ active galaxies

Seen in X-rays, the entire sky is aglow. Even far away from bright sources, X-rays originating from beyond our galaxy provide a steady glow in every direction. Astronomers have long suspected that the chief contributors to this cosmic X-ray ba...

Chandra images torrent of star formation

A new Chandra X-ray Observatory image of Messier 82, or M82, shows the result of star formation on overdrive. At a distance of only 12 million light years, M82 provides a unique cosmic laboratory for studying conditions similar to those that e...

Despite damage, membrane protein structure can be seen using new X-ray...

Australian researchers have identified a way to measure the structure of membrane proteins despite being damaged when using X-ray Free-Electron Lasers (XFELs), a discovery that will help fast track the development of targeted drugs using emerging XF...

First compelling evidence for a black hole after recent supernova

Amsterdam, November 17th, 2010¬ -- Black holes, or the remnants of hyper-or supernova explosions, have intrigued scientists since the concept was first introduced in 1967. Astronomers have only ever been able to observe gamma-ray bursts, considered...

National study shows CT screening of former, current smokers reduces lung...

WASHINGTON, DC -- A large national study finds that screening current or former heavy smokers with a CT scan can reduce deaths from lung cancers by 20 percent. One potential reason for the reduction is that the scan can pick up tumors at an early ...

Study describes a tabletop source of bright, coherent X-rays

Producing tightly focused beams of high energy X-rays, to examine everything from molecular structures to the integrity of aircraft wings, could become simpler and cheaper according to new research. Today, in Nature Physics, researchers from Imp...

Enigmatic star devours companion; possibly pregnant with second-generation planets

An astronomer may have caught a cannibalistic star in the act of devouring a companion and making a second generation of exoplanets from the resulting orbiting disk. Using data from NASA's Chandra X-ray Observatory, Joel Kastner, professor at ...

Chandra finds evidence for stellar cannibalism

Evidence that a star has recently engulfed a companion star or a giant planet has been found using NASA's Chandra X-ray Observatory. The likely existence of such a "cannibal" star provides new insight into how stars and the planets around them ...

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