March 7, 2013

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Geneticists Discover the Oldest Known Genetic Branch of the Human Y Chromosome

Human Y Chromosome Much Older Than Previously Thought

Geneticists at the University of Arizona have discovered an African American Y chromosome with lineage that diverged from previously known Y chromosomes about 338,000 ago, pushing back the time the last common Y chromosome ancestor lived by almost 70 percent. UA geneticists have discovered the oldest known genetic branch of the human Y chromosome – […]

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March 7, 2013

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Chandra Data Helps Detail the Interior Structure of Neutron Stars

Data from Chandra Helps Detail the Interior Structure of Neutron Stars

Using data from Chandra, ESA’s XMM-Newton, and NASA’s Rossi X-ray Timing Explorer, scientists made one of the most reliable estimates of the relation between the radius of a neutron star and its mass, furthering their understanding about the interior structure of neutron stars. Neutron stars, the ultra-dense cores left behind after massive stars collapse, contain […]

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March 7, 2013

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Distance to the Large Magellanic Cloud Recalculated, Improves Hubble Constant

Distance to Large Magellanic Cloud Measured

By observing a rare close pairs of stars, known as eclipsing binaries, a team of scientists recalculated the distance to the Large Magellanic Cloud, refining the uncertainty in the distance to the LMC down to 2.2 percent and decreasing the uncertainty in calculations of the Hubble constant to 3 percent. Pasadena, California — A team […]

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March 6, 2013

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How Jupiter and Saturn Formed and Evolved

The Possible Origins of Jupiter and Saturn

In newly published research from the Carnegie Institution for Science, Alan Boss uses highly detailed, three dimensional models to help explain how the gas giant planets Jupiter and Saturn may have formed and evolved. Washington, D.C. — New theoretical modeling by Carnegie’s Alan Boss provides clues to how the gas giant planets in our solar […]

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March 6, 2013

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The Preservation of Colors in Fossil Insects

Explaining the Preservation of Colors in Fossil Insects

By using elevated pressures and temperatures to simulate the effects of burial on structurally colored cuticles of modern beetles, researchers at Yale University show how colors change during fossilization. An international research team led by Yale University scientists has for the first time explained the preservation of colors in fossil insects. The discovery shows why […]

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March 6, 2013

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New Insights into the Life and Death of Black Holes

New Insights into the Iife and Death of Black Holes

A newly published study from scientists at the University of York dismisses the so-called firewall paradox and reveals new insights into the life and death of black holes. Their findings dispel the so-called firewall paradox which shocked the physics community when it was announced in 2012 since its predictions about large black holes contradicted Einstein’s […]

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March 6, 2013

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UCSF Researchers Discover a New Type of Pluripotent Cell in Breast Tissue

A New Type of Pluripotent Cell Discovered

Scientists at UC San Francisco discovered that rare somatic cells extracted from human breast tissue are pluripotent cells that could play an important role in regenerative medicine. As with human embryonic stem cells, the newly found cells are pluripotent, or capable of turning into most cell types, the authors said. The scientists discovered that when […]

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March 6, 2013

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Black Hole Collision May Have Triggered Starforming and Accretion-Powered Activity

Black Hole Collision May Have Triggered Starforming and Accretion-Powered Activity

In a soon to be published paper, researchers at Vanderbilt University suggest that several million years ago the Milky Way was teaming with starforming and accretion-powered activity that was triggered by a violent collision and merger between black holes. These days the core of the Milky Way galaxy is a pretty tame place…cosmically speaking. The […]

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March 6, 2013

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Comet 2013 A1 to Make a Very Close Flyby of Mars

Comet 2013 A1 Will Make a Very Close Approach to Mars

Scientists have projected that comet 2013 A1 will make a very close approach to Mars in October 2014, possibly passing as close as 31,000 miles (50,000 kilometers) from the Red Planet’s surface. The latest trajectory of comet 2013 A1 (Siding Spring) generated by the Near-Earth Object Program Office at NASA’s Jet Propulsion Laboratory in Pasadena, […]

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March 5, 2013

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New Data Suggests a Chemical Exchange Between Europa’s Ocean and Surface

Evidence that Salty Water Beneath the Surface of Europa Actually Makes its Way to the Surface

Using data from the W. M. Keck Observatory, researchers have the best evidence yet that salty water from the liquid ocean beneath Europa’s frozen exterior actually makes its way to the surface. Kamuela, Hawaii — With data collected from the mighty W. M. Keck Observatory, California Institute of Technology (Caltech) astronomer Mike Brown — known […]

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March 5, 2013

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Gravitational Lensing Gives Hubble Image of Abell 68 a Unique Look

Hubble Views Abell 68

This new Hubble Space Telescope image of Abell 68 is enhanced by gravitational lensing, showing swarms of galaxies that each have billions of stars and vast amounts of dark matter. The NASA/ESA Hubble Space Telescope is one of the most powerful available to astronomers, but sometimes it too needs a helping hand. This comes in […]

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March 5, 2013

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New Spectroscopic Method Could Improve Optical Devices

New Spectroscopic Method Could Improve Optical Devices

Developed by a team of researchers, energy-momentum spectroscopy allows scientists to better understand how light is emitted from layered nanomaterials and other thin films, possibly leading to better LEDs and solar cells. Providence, Rhode Island (Brown University) — A multi-university research team has used a new spectroscopic method to gain a key insight into how […]

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