Monday 27 April 2015

New tabletop detector “sees” single electrons

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MIT physicists have developed a new tabletop particle detector that is able to identify single electrons in a

The post New tabletop detector “sees” single electrons has been published on Technology Org.

 
#materials 
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Strange supernova is 'missing link' in gamma-ray burst connection

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Astronomers find that 'central engines' in supernova explosions can come in different strengths, and include those that produce powerful blasts of gamma rays, and weaker versions that produce no such bursts.
via Science Daily
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NASA’s Messenger Mission Is Set to Crash Into Mercury

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The Messenger spacecraft, in orbit around the planet the past four years, is expected to smash into its surface on Thursday, according to plan.







via New York Times

2-D semiconductor comes clean: Performance dramatically improved

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Scientists have dramatically improved the performance of graphene by encapsulating it in boron nitride. They’ve now shown they can similarly improve the performance of another 2D material, molybdenum disulfide (MoS2. Their findings provide a demonstration of how to study all 2D materials and hold great promise for a broad range of applications including high-performance electronics, detection and emission of light, and chemical/bio-sensing.
via Science Daily

Is the universe a hologram?

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The 'holographic principle,' the idea that a universe with gravity can be described by a quantum field theory in fewer dimensions, has been used for years as a mathematical tool in strange curved spaces. New results suggest that the holographic principle also holds in flat spaces. Our own universe could in fact be two dimensional and only appear three dimensional -- just like a hologram.
via Science Daily
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Electric Solar Wind Sail could make bidirectional human Mars flights economically feasible

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The E-sail is a novel propellantless technology that was invented in Finland in 2006. The E-sail utilizes long, charged tethers to convert natural solar wind momentum flux into spacecraft thrust.
via Science Daily
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Monogram - Eagle Nebula, Pillars of Creation Stickers

Here's a great sheet of stickers featuring a beautiful image from deep space


tagged with: breathtaking astronomy images, eglneb, young stars clusters, star forming nebulae, messier 16 ngc 6611, pillars of creation, inspirational, eagle nebula, monograms, initialled, heavens, eso, european southern observatory, vista, initials, monogrammed, monogram

Galaxies, Stars and Nebulae series A breathtaking outer space picture showing a spectacular three-colour composite mosaic image of the Eagle Nebula (Messier 16, or NGC 6611). It's based on images obtained with the Wide-Field Imager camera on the MPG/ESO 2.2-metre telescope at the La Silla Observatory.

At the centre, the so-called “Pillars of Creation” can be seen and this wide-field image shows not only the central pillars, but also several others in the same star-forming region, as well as a huge number of stars in front of, in, or behind the Eagle Nebula.

The cluster of bright stars to the upper right is NGC 6611, home to the massive and hot stars that illuminate the pillars. The “Spire” - another large pillar - is in the middle left of the image.

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image code: eglneb

ESO/J. Emerson/VISTA www.eso.org
Reproduced under the Creative Commons Attribution 3.0 Unported license.

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via Zazzle Astronomy market place

Highly conductive germanium nanowires made by a simple, one-step process

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For the first time, germanium nanowires have been deposited on indium tin oxide substrate by a simple, one-step process called electrodeposition. The nanowires produced by this method have outstanding electronic properties and can be used as high-capacity anode material for lithium-ion batteries; however, the nanowires were previously too expensive and difficult to produce. This process may resolve the cost issue.
via Science Daily

Researchers take a step towards development of optical single-phonon detector

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(Phys.org)—A team of researchers with members from institutions in the U.S. and Austria has succeeded in building a device that shows a clear step towards the development of an optical single-phonon detector. In their paper published in the journal Nature, the team describes their device and to what purposes it might be put. Ivan Favero with the University of Paris, offers a News & Views research perspective on the work done by the team and why it represents a big step forward in optomechanics.

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Space Station over Lunar Terminator

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Zazzle Space Gifts for young and old

Crab Nebula – Hubble Telescope 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!


tagged with: crab nebula, nasa, universe, stars, outer space, hubble telescope, cosmos, astronomy, nature, space picture, esa, nebula, hubble space telescope, astronomical, cosmology, space photograph, crab nebula photograph, space, natural, science, abstract, space photo, space image, nebula picture, nebula photograph, nebula photo, nebula image, blue, turquoise, cyan, space gifts, space products

Hubble photograph of the Crab Nebula

This is a composite photograph produced from 24 individual images taken by the Hubble Space Telescope, and is the most detailed image of the Crab Nebula that has been produced to date.
Credit: NASA, ESA and Allison Loll/Jeff Hester (Arizona State University). Acknowledgement: Davide De Martin (ESA/Hubble)

You can personalise the design further if you'd prefer, such as by adding your name or other text, or adjusting the image - just click 'Customize it' to see all the options. IMPORTANT: If you choose a different sized version of the product, it's important to click Customize and check the image in the Design view to ensure it fills the area to the edge of the product, otherwise white edges may be visible.

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Engineers introduce design that mimics nature’s camouflage

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It can shift from red to green to violet. It can mimic patterns and designs. And it can

The post Engineers introduce design that mimics nature’s camouflage has been published on Technology Org.

 
#materials 
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Andromeda Galaxy Posters

Here's a great poster featuring a beautiful image from deep space


tagged with: galaxy, andromeda, space, astronomy, poter, m31, stars

Beautiful large poster of the Andromeda Galaxy. Unlike most images of Andromeda, this image reveals real details in the galaxy all the way to the center.

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Click to customize with size, paper type etc.
via Zazzle Astronomy market place

Monogram Omega Nebula - Our Amazing Universe Oval Sticker

Here's a great sheet of stickers featuring a beautiful image from deep space


tagged with: awesome astronomy images, omgneb, star forming regions, ngc 6618, omega nebula, inspirational, heavens, uplifting, initials, monogrammed, messier 17, european southern observatory, eso, vista, initialled, monogram, monograms

Galaxies, Stars and Nebulae series A great outer space picture featuring a three-colour composite image of the Omega Nebula (Messier 17, or NGC 6618), based on images obtained with the EMMI instrument on the ESO 3.58-metre New Technology Telescope at the La Silla Observatory. North is down and East is to the right in the image. It spans an angle equal to about one third the diameter of the Full Moon, corresponding to about 15 light-years at the distance of the Omega Nebula. The three filters used are B (blue), V ("visual", or green) and R (red).

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image code: omgneb

ESO/J. Emerson/VISTA www.eso.org
Reproduced under the Creative Commons Attribution 3.0 Unported license.

»visit the HightonRidley store for more designs and products like this
Click to customize.
via Zazzle Astronomy market place

Chemists' synthesis of silicon oxides opens 'new world in a grain of sand'

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In an effort that reaches back to the 19th-century laboratories of Europe, a discovery by chemistry researchers establishes new research possibilities for silicon chemistry and the semiconductor industry. The study gives details on the first time chemists have been able to trap molecular species of silicon oxides.
via Science Daily

Turbulent Star-Birth Region Selection 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!


tagged with: hubble, nasa, stars, star, galaxy, galaxies, space, astronomy, telescope, beautiful, photos, nebula, nature, landscapes

In commemoration of NASA's Hubble Space Telescope completing its 100,000th orbit in its 18th year of exploration and discovery, scientists at the Space Telescope Science Institute in Baltimore, Md., have aimed Hubble to take a snapshot of a dazzling region of celestial birth and renewal. Hubble peered into a small portion of the nebula near the star cluster NGC 2074 (upper, left). The region is a firestorm of raw stellar creation, perhaps triggered by a nearby supernova explosion. It lies about 170,000 light-years away near the Tarantula nebula, one of the most active star-forming regions in our Local Group of galaxies. The three-dimensional-looking image reveals dramatic ridges and valleys of dust, serpent-head "pillars of creation," and gaseous filaments glowing fiercely under torrential ultraviolet radiation. The region is on the edge of a dark molecular cloud that is an incubator for the birth of new stars. The high-energy radiation blazing out from clusters of hot young stars already born in NGC 2074 is sculpting the wall of the nebula by slowly eroding it away. Another young cluster may be hidden beneath a circle of brilliant blue gas at center, bottom. In this approximately 100-light-year-wide fantasy-like landscape, dark towers of dust rise above a glowing wall of gases on the surface of the molecular cloud. The seahorse-shaped pillar at lower, right is approximately 20 light-years long, roughly four times the distance between our Sun and the nearest star, Alpha Centauri. The region is in the Large Magellanic Cloud (LMC), a satellite of our Milky Way galaxy. It is a fascinating laboratory for observing star-formation regions and their evolution. Dwarf galaxies like the LMC are considered to be the primitive building blocks of larger galaxies. This representative color image was taken on August 10, 2008, with Hubble's Wide Field Planetary Camera 2. Red shows emission from sulfur atoms, green from glowing hydrogen, and blue from glowing oxygen. Source: NASA.

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