Thursday 16 April 2015

Study: Algae from wastewater solves two problems

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In one of the first studies to examine the potential for using municipal wastewater as a feedstock for

The post Study: Algae from wastewater solves two problems has been published on Technology Org.

 
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Dating the moon-forming impact event with meteorites

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Through a combination of data analysis and numerical modeling work, researchers have found a record of the ancient moon-forming giant impact observable in stony meteorites. The research indicates numerous kilometer-sized fragments from the giant impact struck main belt asteroids at much higher velocities than typical main belt collisions, heating the surface and leaving behind a permanent record of the impact event.

via Science Daily

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Giant galaxies die from the inside out: Star formation shuts down in the centers of elliptical galaxies first

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Astronomers have shown for the first time how star formation in "dead" galaxies sputtered out billions of years ago. Astronomers have revealed that three billion years after the Big Bang, these galaxies still made stars on their outskirts, but no longer in their interiors. The quenching of star formation seems to have started in the cores of the galaxies and then spread to the outer parts.

via Science Daily

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Intense magnetic field close to supermassive black hole

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Astronomers have revealed an extremely powerful magnetic field, beyond anything previously detected in the core of a galaxy, very close to the event horizon of a supermassive black hole.

via Science Daily

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Dwarf planet Ceres color map reveals surface diversity

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A new color map of dwarf planet Ceres, which NASA's Dawn spacecraft has been orbiting since March, reveals the diversity of the surface of this planetary body. Differences in morphology and color across the surface suggest Ceres was once an active body.

via Science Daily

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Proto-suns teeming with prebiotic molecules

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Complex organic molecules such as formamide, from which sugars, amino acids and even nucleic acids essential for life can be made, already appear in the regions where stars similar to our Sun are born. Astrophysicists have detected this biomolecule in five protostellar clouds and propose that it forms on tiny dust grains.

via Science Daily

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Nanotubes with two walls have singular qualities

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Double-walled carbon nanotubes have unique electronic properties that may someday be tuned for semiconducting applications or for strong, highly conductive nanotube fibers, according to researchers.

via Science Daily

Planets and dwarf planets poster

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Planets and dwarf planets of the solar system

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Scanning meteorites in 3D may flesh out solar system’s origin story

Science Focus

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What’s in a rock? A few mineral deposits, maybe a ring of metal—and, possibly, a snippet of the Solar System’s origin story.

That’s the premise under which a team of researchers at the American Museum of Natural History in New York City is operating. By conducting three and two-dimensional image analyses of rocks brought to Earth from space, these scientists hope to demystify the elemental formations that birthed the planets we know today.

Denton Ebel, chair of the AMNH’s physical sciences division, explained that much of our understanding of the inchoate Solar System can be gleaned from studying chondrites, which are stony meteorites that contain molten droplets of minerals. Unlike most meteorites at the time of the Solar System’s formation, chondrites never joined a large planet or underwent extensive physical maturation; thus, they’re one of the most primitive forms of mass from the Solar System in existence, rendering them ideal candidates for this area of study.

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 » see original post http://feeds.arstechnica.com/~r/arstechnica/science/~3/4ZiA71qk9s4/
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New LHC Experiment to Seek Miniature Black Holes and Disprove the Big Bang Theory

Science Focus

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The Large Hadron Collider (LHC) – a massive particle accelerator, located 175 metres beneath the Franco-Swiss border –

The post New LHC Experiment to Seek Miniature Black Holes and Disprove the Big Bang Theory has been published on Technology Org.

 
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 » see original post http://feedproxy.google.com/~r/TechnologyOrgPhysicsNews/~3/EHpgZdblu7A/
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Red Supergiant Star V838 Monocerotis Star Stickers

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Galaxies, Stars and Nebulae series A gorgeous astronomy picture featuring a distant star, named V838 Monocerotis, in the direction of the constellation of Monoceros on the outer edge of our Milky Way. The image shows the swirls of dust spiralling across trillions of miles of interstellar space, lit mainly from within by a pulse of light from the red supergiant, two years into its journey.

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image code: monocerotis

Image credit: NASA, the Hubble Heritage Team (AURA/STScI) and ESA

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One-Armed Spiral Galaxy NGC 4725

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While most spiral galaxies, including our own Milky Way, have two or more spiral arms, NGC 4725 has only one. In this sharp color composite image, the solo spira mirabilis seems to wind from a prominent ring of bluish, newborn star clusters and red tinted star forming regions. The odd galaxy also sports obscuring dust lanes a yellowish central bar structure composed of an older population of stars. NGC 4725 is over 100 thousand light-years across and lies 41 million light-years away in the well-groomed constellation Coma Berenices. Computer simulations of the formation of single spiral arms suggest that they can be either leading or trailing arms with respect to a galaxy's overall rotation. Also included in the frame, sporting a noticably more traditional spiral galaxy look, is a more distant background galaxy.
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Cone Nebula iPad Mini Case

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A lovely detail of an image of the Cone Nebula thanks to NASA/Hubble.

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Plastic parts for internal combustion engines

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Efforts to produce lighter vehicles necessarily include engine parts, such as the cylinder casing, which could shed up

The post Plastic parts for internal combustion engines has been published on Technology Org.

 
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The Sun in the Milky Way galaxy poster

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Early explorers mapping the continents of our globe, astronomers are busy charting the spiral structure of our galaxy, the Milky Way. Using infrared images from NASA's Spitzer Space Telescope, scientists have discovered that the Milky Way's elegant spiral structure is dominated by just two arms wrapping off the ends of a central bar of stars. Previously, our galaxy was thought to possess four major arms. This artist's concept illustrates the new view of the Milky Way, along with other findings presented at the 212th American Astronomical Society meeting in St. Louis, Mo. The galaxy's two major arms (Scutum-Centaurus and Perseus) can be seen attached to the ends of a thick central bar, while the two now-demoted minor arms (Norma and Sagittarius) are less distinct and located between the major arms. The major arms consist of the highest densities of both young and old stars; the minor arms are primarily filled with gas and pockets of star-forming activity. The artist's concept also includes a new spiral arm, called the "Far-3 kiloparsec arm," discovered via a radio-telescope survey of gas in the Milky Way. This arm is shorter than the two major arms and lies along the bar of the galaxy. Our sun lies near a small, partial arm called the Orion Arm, or Orion Spur, located between the Sagittarius and Perseus arms.

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Carina Nebula, Star Forming Gas-cloud Sculpture Stickers

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Galaxies, Stars and Nebulae series A beautiful space photograph featuring the 7500 light year distant Carina Nebula. This Hubble image shows rich, interstellar gas clouds feeding the formation of new stars. As a proto star forms, the gas clouds get dragged to its surface and some gets emitted as tight jets of material travelling at hundreds of miles per second. These in turn help sculpt the gas clouds into weird and grotesque shapes, some looking like strange worms, swimming through space.

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image code: cnbigc

Image credit: NASA, the Hubble Heritage Team (AURA/STScI) and ESA

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Star birth in Carina Nebula from Hubble's WFC3 det Case For The iPad Mini

Here's a great iPad case from Zazzle featuring a Hubble-related design. Maybe you'd like to see your name on it? Click to personalize and see what it's like!


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ImageID: 42-23286264 / STScI / NASA/Corbis / Star birth in Carina Nebula from Hubble&#39;s WFC3 detector

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