Science

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Less to the Milky Way than previously thought

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An image of the Andromeda galaxy, Messier 31.

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ALMA Finds Double Star with Weird and Wild Planet-forming Discs

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Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have found wildly misaligned planet-forming gas discs around the two young stars in the binary system HK Tauri. These new ALMA observations provide the clearest picture ever of protoplanetary discs in a double star. The new result also helps to explain why so many exoplanets — unlike the planets in the Solar System — came to have strange, eccentric or inclined orbits.

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FEI adds Phase Plate Technology and Titan Halo TEM to its Structural Biology Product Portfolio: New solutions provide the high-quality imaging and contrast necessary to analyze the 3D structure of molecules and molecular complexes

FEI (NASDAQ: FEIC) announced two new products for cryo-electron microscopy applications: a new phase plate solution and the Titan Halo™ transmission electron microscope (TEM). The phase plate is a stable, durable solution to increase the contrast of sensitive biological samples and is available on most TEM platforms from FEI. The Titan Halo TEM provides high-quality optical performance with enhanced flexibility for multi-scale applications in life and biomaterials sciences. With these new products, researchers can now see more detail in their biological specimens, and potentially gain greater insight into the fundamental processes of living systems at the molecular scale.

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Seeing is bead-lieving: Rice University scientists create model 'bead-spring' chains with tunable properties

Rice University researchers are using magnetic beads and DNA "springs" to create chains of varying flexibility that can be used as microscale models for polymer macromolecules.

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DNA linkers serve as bridges between colloidal beads in a new experiment by Rice University scientists to study the physics of "bead-spring" polymer chains. They found the chains can be tuned for varying degrees of stiffness or flexibility.

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Cassini Spacecraft Reveals 101 Geysers and more on Icy Saturn Moon

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This artist's rendering shows a cross-section of the ice shell immediately beneath one of Enceladus' geyser-active fractures, illustrating the physical and thermal structure and the processes ongoing below and at the surface.

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NASA Long-Lived Mars Opportunity Rover Sets Off-World Driving Record

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This natural color view from NASA's Mars Exploration Rover Opportunity shows "Lunokhod Crater," which lies south of Solander Point on the west rim of Endeavour Crater.

http://www.jpl.nasa.gov/news/news.php?release=2014-245&rn=news.xml&rst=4232

內湖 2021 陳鵬程

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Mapping dark matter, 4.5 billion light years away

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Galaxy cluster MCS J0416.1–2403, one of six clusters targeted by the Hubble Frontier Fields programme. The blue in this image is a mass map created by using new Hubble observations combined with the magnifying power of a process known as gravitational lensing. In red is the hot gas detected by NASA’s Chandra X-Ray Observatory and shows the location of the gas in the cluster. The matter shown in blue that is separate from the red areas detected by Chandra consists of what is known as dark matter, and which can only be detected directly by gravitational lensing.

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Surface impressions of Rosetta's comet

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Images of comet 67P/Churyumov-Gerasimenko taken on July 14, 2014, by the OSIRIS imaging system aboard the European Space Agency's Rosetta spacecraft have allowed scientists to create this three-dimensional shape model of the nucleus.

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New imaging agent provides better picture of the gut

A multi-institutional team of researchers has developed a new nanoscale agent for imaging the gastrointestinal (GI) tract. This safe, noninvasive method for assessing the function and properties of the GI tract in real time could lead to better diagnosis and treatment of gut diseases.

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Parched West Is Using Up Underground Water: NASA/UCI

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Surface-water depletion in the Colorado River Basin has left this "bathtub ring" of mineral deposits on Lake Mead, but groundwater loss is invisible.