Cone Nebula Hubble Space Covers For 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!

Cone Nebula Hubble Space Covers For iPad Mini

tagged with: cone nebula, red glow, nebula photo, nebula photograph, stars, nasa, universe, hubble photo, astronomy, nature, ngc 2264, nebula, nebulae, red sky, outer space, hubble telescope, cosmos, cosmic, astronomical, astrophotography, cosmology, space, picture, image, deep, natural, science, abstract, photo, dark, cloudy, gifts, products

This is a Hubble Space Telescope photograph of the Cone nebula (NGC 2264), which is situated in the Monoceros constellation, 2500 light years away. It depicts a tall pillar of dust and gas against a glowing red background, and the nebula derives its name from the conical appearance it has in ground-based images. This is a composite image, dating from 2002.

Credit: NASA, H. Ford (JHU), G. Illingworth (UCSC/LO), M.Clampin (STScI), G. Hartig (STScI), the ACS Science Team, and ESA.

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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Gold nanotubes launch a three-pronged attack on cancer cells

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Scientists have shown that gold nanotubes have many applications in fighting cancer: internal nanoprobes for high-resolution imaging; drug

The post Gold nanotubes launch a three-pronged attack on cancer cells has been published on Technology Org.

 
#materials 
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Monster black hole discovered at cosmic dawn

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The discovery of the brightest quasar in the early universe, powered by the most massive black hole yet known at that time presents a puzzle to researchers: How could something so massive and luminous form so early in the universe, only 900 million years after the Big Bang?

via Science Daily

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Study demonstrates an electronic switch based on stereoisomerism

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As devices get smaller and smaller, scientists are running up against limits to how small one can feasibly construct a circuit using bulk materials. Molecular circuits offer a possible solution to overcoming these size constraints, and have led to a growing field merging chemistry with electronics.



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Bending a highly energetic electron beam with crystal

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Scientists have demonstrated that a bent silicon crystal can bend the paths of focused, very energetic electron beams much more than magnets used today. The method could be of interest for particle accelerator applications such as next-generation X-ray lasers that will help scientists unravel atomic structures and motions in unprecedented detail.

via Science Daily

Monster black hole discovered at cosmic dawn

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Scientists have discovered the brightest quasar in the early universe, powered by the most massive black hole yet known at that time. The international team led by astronomers from Peking University in China and from the University of Arizona announce their findings in the scientific journal Nature on Feb. 26.



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Vintage Astronomy, Hydra Snake Constellation Stars Poster

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

Vintage Astronomy, Hydra Snake Constellation Stars Poster

tagged with: sky, serpent, constellations, retro, antique, americana, vintage, celestial map, star chart, astronomy, antique celestial

Vintage illustration astronomy and antique celestial constellation Hydra the snake. Hydra is the largest of the 88 modern constellations, measuring 1303 square degrees. It has a long history, having been included among the 48 constellations listed by the 2nd century astronomer Ptolemy. It is commonly represented as a water snake.

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Graphene shows potential as novel anti-cancer therapeutic strategy

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Graphene has been used to target and neutralize cancer stem cells while not harming other cells, investigators report. This new development opens up the possibility of preventing or treating a broad range of cancers, using a non-toxic material, they say.

via Science Daily

Researchers equip humans with magnetic sense

Science Focus

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Magnetoception is a sense which allows bacteria, insects and even vertebrates like birds and sharks to detect magnetic

The post Researchers equip humans with magnetic sense has been published on Technology Org.

 
#physics 
 » see original post http://feedproxy.google.com/~r/TechnologyOrgPhysicsNews/~3/tP9bwOpOOZ0/
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The Rosette Nebula in Hydrogen and Oxygen

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Distant quasar spectrum reveals no sign of changes in mass ratio of proton and electron over 12 billion years

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A team of space researchers working with data from the VLT in Chile has found via measuring the spectrum of a distant quasar by analyzing absorption lines in a galaxy in front of it, that there was no measurable change in the mass ratio of protons and electrons over a span of 12 billion years. In their paper published in the journal Physical Review Letters, the team, made up of two members from VU University in the Netherlands, and two members from Swinburne University of Technology in Australia, describe their findings and what it might mean for helping to explain dark energy.



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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!

Turbulent Star-Birth Region Selection Case For The iPad Mini

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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Improved vision for James Webb Space Telescope

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Key science elements of the James Webb Space Telescope have been upgraded ahead of the observatory’s launch in 2018.

via ESA Space Science

http://www.esa.int/Our_Activities/Space_Science/Improved_vision_for_James_Webb_Space_Telescope

A different Big Bang theory: Los Alamos unveils explosives detection expertise

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Having long kept details of its explosives capabilities under wraps, a team of Los Alamos National Laboratory scientists

The post A different Big Bang theory: Los Alamos unveils explosives detection expertise has been published on Technology Org.

 
#materials 
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Electrical control of light emission near graphene

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Controlling the energy emission of light sources is of fundamental interest and has many applications in photovoltaics, quantum optics, photodetection, biosensing, and other fields. In one of our most recent papers, team Graphenea together with collaborators from Spain, France, Italy, and the USA has demonstrated electrical control of the flow of light from an erbium light source near graphene.

Image: Electrical control of light emission from erbium near graphene. Light is routed to free space, charge excitations in graphene, or plasmons in graphene, as graphene is switched from semiconductor to transparent material to metal.

Erbium nanocrystals are widely used in modern science as miniature sources of light. The crystals are small, with dimensions of several tens of nanometers, and emit light at a wavelength of 1530 nm, which is very convenient for optical communication. Erbium has been extensively tested for quantum optics, a branch of physics that focuses on utilizing the quantum states of photons for computation and communication. Quantum optics puts some tough requirements on the specific state of each photon, demanding extreme control of the properties of the emitted light.

On such a small scale, the direction, polarization, intensity, and rate of emission of emitted light strongly depend on where the emitter is located. A quantum light source near a fiber optic waveguide, for example, will preferentially emit into the fiber. The same source near a metal will, under certain conditions, not emit at all, a phenomenon known as ‘quenching’. In most studies to date, quantum emitters were placed in fixed engineered environments, without a particularly flexible way of tuning the emission. In our collaboration, our graphene has been used to actively modify with the turn of a knob the way erbium ions emit light.

The device presented in the paper entitled “Electrical control of optical emitter relaxation pathways enabled by graphene”, published January 2015 in Nature Physics, consists of a graphene layer on top of an erbium-doped substrate material. The graphene is capped with a polymer electrolyte, which enables strong doping of the graphene. The high level of doping with this method allows us to sweep the Fermi energy from nearly zero all the way up to nearly 1 eV, during which sweep the graphene goes from semiconductor to transparent material to metal. The changing properties of nearby graphene force the erbium to redirect light from free space to carrier excitations in the graphene sheet, and finally to plasmons in graphene. This unique ability to electrically tune the dielectric environment of a nano-emitter opens up avenues in a range of fields, both fundamentally and on the application level.

Graphenea provided the graphene for the experiment. The rest of the materials came from Italy and France, whereas the actual experiments were carried out in collaboration between ICFO near Barcelona and the Massachusetts Institute of Technology.

This is our third paper in the Nature family of journals, all of which are the result of the extremely fruitful collaboration that Graphenea has with Prof. Frank Koppens at ICFO. We strive to continue our strong presence in the scientific research community through collaborations with world-leading graphene scientists.

via Graphenea

The Veil Nebula Selection Posters

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

The Veil Nebula Selection Posters

tagged with: astronomy, space, prints, pictures, gift, gifts, nasa, hubble, nebula, beautiful, science, technology

The Veil Nebula Selection Print. This is a small portion of the Veil Nebula — the shattered remains of a supernova that exploded thousands of years ago. The entire structure spans about 3 degrees on the sky, corresponding to about 6 full moons. The image was taken with Hubble's Wide Field Planetary Camera 2 in November 1994 and August 1997. Courtesy: NASA.

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