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Topic: CalciumWritten by Ann Jenkins / Ray Villard
The object has a chemical composition similar to Halley’s Comet, but it is 100,000 times more massive and has a much higher amount of water. It is also rich in the elements essential for life, including nitrogen, carbon, oxygen, and sulfur. ![]() This artist’s concept shows a massive, comet-like object falling toward a white dwarf. New Hubble Space Telescope findings are evidence for a belt of comet-like bodies orbiting the white dwarf, similar to our solar system’s Kuiper Belt. The findings also suggest the presence of one or more unseen surviving planets around the white dwarf, which may have perturbed the belt to hurl icy objects into the burned-out star. (NASA, ESA, and Z. Levy (STScI)) «Read the rest of this article» Sections: Technology | No Comments
American Heart Association reports FDA Expands Health Claim for More Fruits, VegetablesAmerican Heart Association Can Now Certify These Foods as Heart-Healthy
The ruling was in response to a petition submitted by the Association in September 2012. «Read the rest of this article» Sections: News | No Comments
Tennessee Department of Agriculture says it’s time for Local Honey and Sorghum
Honey is often harvested twice per year, in spring and fall. Flavor is determined solely by the nectar source, giving some honeys stronger flavor than others. As a rule, the lighter the honey’s color the milder its flavor, but buying directly from the beekeeper is the best way to learn the characteristics of a particular honey. «Read the rest of this article» Sections: News | No Comments
NASA’s Kepler space telescope (K2) discovers Planet being ripped apart by White Dwarf StarWritten by Whitney Clavin
“We are for the first time witnessing a miniature “planet” ripped apart by intense gravity, being vaporized by starlight and raining rocky material onto its star,” said Andrew Vanderburg, graduate student at the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts, and lead author of the paper published in Nature. ![]() In this artist’s conception, a tiny rocky object vaporizes as it orbits a white dwarf star. Astronomers have detected the first planetary object transiting a white dwarf using data from the K2 mission. Slowly the object will disintegrate, leaving a dusting of metals on the surface of the star. (CfA/Mark A. Garlick) «Read the rest of this article» Sections: Technology | No Comments
NASA’s MESSENGER Spacecraft ends mission, crashes into MercuryWritten by Tony Phillips
It had used the last of its propellant on April 24th and could no longer maintain a stable orbit. Traveling some 8,750 mph, the plummeting spacecraft made an unseen crater on the side of the planet facing away from Earth. ![]() The colors of the solar system’s innermost planet are enhanced in this tantalizing view, based on global image data from the Mercury-orbiting MESSENGER spacecraft. (NASA / JHU Applied Physics Lab / Carnegie Inst. Washington) «Read the rest of this article» Sections: Technology | No Comments
NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) helps researchers discover how Stars Blow UpWritten by Whitney Clavin
The high-energy X-ray observatory has created the first map of radioactive material in a supernova remnant. The results, from a remnant named Cassiopeia A (Cas A), reveal how shock waves likely rip apart massive dying stars. ![]() Untangling the Remains of Cassiopeia A: This is the first map of radioactivity in a supernova remnant, the blown-out bits and pieces of a massive star that exploded. The blue color shows radioactive material mapped in high-energy X-rays using NuSTAR. (NASA/JPL-Caltech/CXC/SAO) «Read the rest of this article» Sections: Technology | No Comments
Tennessee Department of Agriculture says State received plenty of Rain making Sorghum Crop a Sweet Success
Sorghum syrup is a treasured traditional Tennessee food produced when the extracted juice from the sorghum plant is boiled down. Tennessee is one of the nation’s leading states in sorghum syrup production. «Read the rest of this article» Sections: News | No Comments
NASA uses Meteoric Dust to map the Atmosphere
On August 11th and 12th, 2013, the annual Perseid meteor shower will peak, filling the sky with streaks of light, commonly known as shooting stars. Such visually stunning showers are actually but the tip of the iceberg when it comes to meteoroids slamming into Earth’s atmosphere: Some 10 to 40 tons of material of invisible meteoric dust enters the atmosphere from interplanetary space every day. ![]() Larger meteoroids cause bright flashes of light when they hit Earth’s atmosphere, such as this fireball caught during the Perseid meteor shower Aug. 12, 2006. The bulk of meteoric activity is much less showy: Some 10 to 40 tons of meteor dust enter our atmosphere every day. (Image Credit: Courtesy of Pierre Martin) «Read the rest of this article» Sections: Technology | No Comments
American Heart Association says DNA particles in the Blood may help speed detection of Coronary Artery DiseaseHigh blood levels of these DNA particles may eventually help identify patients at risk for further serious heart problems.
The study involved 282 patients, ages 34 to 83, who reported chest pain and were suspected of having coronary artery disease. Researchers used computed tomography imaging to look for hardened, or calcified, buildup in the blood vessels that supply the heart. Blood samples also were tested for bits of genetic material. Release of small DNA particles in the blood occurs during chronic inflammatory conditions such as coronary artery disease. «Read the rest of this article» Sections: News | No Comments
NASA’s Mars Rover Opportunity investigates Rock changed by WaterWritten by Guy Webster
The fractured rock, called “Esperance,” provides evidence about a wet ancient environment possibly favorable for life. The mission’s principal investigator, Steve Squyres of Cornell University, Ithaca, NY, said, “Esperance was so important, we committed several weeks to getting this one measurement of it, even though we knew the clock was ticking.” ![]() The pale rock in the upper center of this image, about the size of a human forearm, includes a target called “Esperance,” which was inspected by NASA’s Mars Exploration Rover Opportunity. Data from the rover’s alpha particle X-ray spectrometer (APXS) indicate that Esperance’s composition is higher in aluminum and silica, and lower in calcium and iron, than other rocks Opportunity has examined in more than nine years on Mars. (Image Credit: NASA/JPL-Caltech/Cornell/Arizona State Univ.) «Read the rest of this article» Sections: Technology | No Comments
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