February 25, 2013

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Sideways Motions of Distant Stars Shed New Light on Milky Way Evolution

New Light on Milky Way Evolution

A team of astronomers used Hubble to precisely measure the sideways motions of a small sample of stars located far from the galaxy’s center, shedding new light on the evolution of the Milky Way. Peering deep into the vast stellar halo that envelops our Milky Way galaxy, astronomers using NASA’s Hubble Space Telescope have uncovered […]

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February 25, 2013

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Hubble Views a Herbig-Haro Object

Hubble Views a Young Star

This new Hubble image shows a Herbig-Haro object, a jet of glowing material trailed by an orange-hued plume of gas and dust. This image shows an object known as HH 151, a bright jet of glowing material trailed by an intricate, orange-hued plume of gas and dust. It is located some 460 light-years away in […]

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February 22, 2013

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Using a Fifth Force of Nature to Probe Earth’s Deep Interior

New Way to Probe the Deep Earth Interior

In a newly published study, university researchers propose a new way to probe Earth’s deep interior that relies on a fifth force of nature called a long-range spin-spin interaction. Researchers from Amherst College and The University of Texas at Austin have described a new technique that might one day reveal in higher detail than ever […]

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February 22, 2013

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Supercomputer Simulations Present a New View of Black Hole Jets and Accretion Disks

Black Hole Simulations on XSEDE Supercomputers

New 3D simulations performed on powerful supercomputers are helping researchers predicted the formation of accretion disks and relativistic jets that are shaped by the extreme gravity of black holes and by the powerful magnetic forces generated by their spin. Magneto-spin alignment effect movie by Ralf Kaehler (for Science paper by McKinney, Tchekhovskoy, and Blandford 2012): […]

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February 22, 2013

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Jagged-1 Protein Stimulates Bone Growth

Jagged 1 Stimulates Human Stem Cells to Differentiate into Bone Producing Cells

Scientists from the University of Pennsylvania have discovered that a protein called Jagged-1 stimulates human stem cells to differentiate into bone-producing cells. Philadelphia — Researchers from the University of Pennsylvania School of Veterinary Medicine have discovered that a protein called Jagged-1 stimulates human stem cells to differentiate into bone-producing cells. This protein could help both […]

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February 22, 2013

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Study Shows That Bees and Flowers Communicate Using Electrical Fields

Bees and Flowers Communicate Using Electrical Fields

Scientists from the University of Bristol have discovered that flowers use patterns of electrical signals in concert with the flower’s other attractive signals to enhance floral attraction to insect pollinators such as bumblebees. Flowers’ methods of communicating are at least as sophisticated as any devised by an advertising agency, according to a new study, published […]

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February 22, 2013

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A New Class of Molecular Compounds Capable of Killing the Influenza Virus

A New Class of Molecular Compounds Capable of Killing the Influenza Virus

In a newly published study, an international team of scientists detail a new class of molecular compounds capable of killing the influenza virus. Simon Fraser University virologist Masahiro Niikura and his doctoral student Nicole Bance are among an international group of scientists that has discovered a new class of molecular compounds capable of killing the […]

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February 22, 2013

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A Multi-Colored Mercury

A Colorful View of Mercury

This NASA image of the day shows a multi-colored Mercury using color to enhance the differences between the rocks that make up Mercury’s surface. Colors of the Innermost Planet This colorful view of Mercury was produced by using images from the color base map imaging campaign during MESSENGER’s primary mission. These colors are not what […]

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February 22, 2013

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New Equations to Better Understand Solar Wind

Deciphering the Mysterious Math of the Solar Wind

A scientist at NASA’s Goddard Space Flight Center has created a set of equations that will lead to more realistic simulations of solar wind turbulence and the propagation of energetic particles. Many areas of scientific research — Earth’s weather, ocean currents, the outpouring of magnetic energy from the sun — require mapping out the large […]

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February 21, 2013

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Gravity Alone Does Not Explain the Distribution of Stars in Crowded Clusters

Gravity Does Not Fully Explain The Distribution Of Stars In Crowded Clusters

Findings from a new study suggest that pull of gravity doesn’t fully explain the distribution of stars in crowded clusters and provides new insights into theoretically predicted processes that govern the evolution of star clusters. Gravity remains the dominant force on large astronomical scales, but when it comes to stars in young star clusters the […]

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February 21, 2013

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“Proto-RNA Bases” Assemble in Water, Hint at Origins of Life

An Alternate Theory For The Origin Of RNA

A newly published study explores an alternate theory for the origin of RNA, achieving highly ordered self-assembly in water with small molecules that are similar to the bases of RNA and possibly providing insights into the origin of the first RNA-like polymers. The base pairs that hold together two pieces of RNA, the older cousin […]

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February 21, 2013

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Shedding New Light on the Evolutionary Origin of the Head

Researchers Shed New Light On The Evolutionary Origin Of The Head

In an effort to shed new light on the evolutionary origin of the head, a newly published study looks at the sea anemone Nematostella vectensis to find out if one of the ends of the sea anemone corresponds to the head of higher animals. A research group at the Sars Center in Bergen has shed […]

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