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December 24, 2013

NASA astronauts step out on Christmas Eve spacewalk
Washington (AFP) Dec 24, 2013
Two NASA astronauts stepped out Tuesday on a rare Christmas Eve spacewalk to complete repairs at the International Space Station. "The 10th spacewalk of the year at the International Space Station is now officially under way," a NASA commentator said at 6:53 am (1153 GMT), as astronauts made a second outing to replace an ammonia pump module whose internal control valve failed December 11. The main task of the day is to retrieve a spare pump module from an external stowage platform and install it ... read more

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Working With NASA On The Space Structures Of The Future NASA is seeking to advance a technology with the potential to drastically change how we envision transporting and safeguarding astronauts: inflatable structures. Space structure engineers and ... more		Using an Atmosphere to Weigh a Planet A new study finds that the mass of an exoplanet can be determined solely by looking at the starlight that passes through the planet's atmosphere. When sunlight streaming through a planet's atm ... more		Van Allen Probes Shed Light on Decades-old Mystery New research using data from NASA's Van Allen Probes mission helps resolve decades of scientific uncertainty over the origin of ultra-relativistic electrons in Earth's near space environment, and is ... more
				Solar activity not a key cause of climate change Climate change has not been strongly influenced by variations in heat from the sun, a new scientific study shows. The findings overturn a widely held scientific view that lengthy periods of wa ... more		NASA Awards Launch Services Contract for InSight Mission NASA has selected United Launch Services LLC of Centennial, Colo., to launch the Interior Exploration Using Seismic Investigations, Geodesy and Heat Transport (InSight) mission to Mars. InSigh ... more

The Rise and Fall of Galactic Cities In the fable of the town and country mice, the country mouse visits his city-dwelling cousin to discover a world of opulence. In the early cosmos, billions of years ago, galaxies resided in the equi ... more		How hypergravity impacts electric arcs Arc discharges are common in everyday conditions like welding or in lightning storms. But in altered gravity, not as much is known about the behaviour of electric discharges. For the first tim ... more		RTX's Raytheon secures $529 million contract to bolster Dutch Patriot air defense system Slingshot Aerospace to enhance USSF technology for GPS jamming and spoofing detection Hamas to free first 3 Israeli hostages Sunday if cease-fire takes effect		Gilat Awarded Project from Colombia's MINTIC Gilat Satellite Networks Ltd. has been awarded a project valued at $99-million over approximately three and a half years. The contract for the project is expected to be signed shortly. In support of ... more
				Powerful ancient explosions explain new class of supernovae Astronomers affiliated with the Supernova Legacy Survey (SNLS) have discovered two of the brightest and most distant supernovae ever recorded, 10 billion light-years away and a hundred times more lu ... more		Massive stars mark out Milky Way's 'missing' arms A 12-year study of massive stars has reaffirmed that our Galaxy has four spiral arms, following years of debate sparked by images taken by NASA's Spitzer Space Telescope that only showed two arms. ... more

CubeSats, SmallSats and MicroSats

International Conference on Protection of Materials and Structures From Space Environment

Tempur-Pedic Mattress Comparison & Memory Foam Mattress Review

Salty surprise -- ordinary table salt turns into 'forbidden' forms High-pressure experiments with ordinary table salt have produced new chemical compounds that should not exist according to the textbook rules of chemistry. The study at DESY's X-ray source PETRA III ... more		Charge Order competes with superconductivity Superconductors are materials that can conduct electricity without any loss of energy. In order to exhibit this property, however, classical superconductors need to be cooled almost to absolute zero ... more		Companies slam delay on deep-sea mining rules Three million years ago our ancestors relied on plant-based diets Indonesia's Mount Ibu erupts more than 1,000 times this month		Electron 'antenna' tunes in to physics beyond Higgs Though it was hailed as a triumph for the "Standard Model" of physics - the reigning model of fundamental forces and particles - physicists were quick to emphasize that last year's discovery of the ... more
				New magnetic behavior in nanoparticles could lead to even smaller digital memories Electronic devices such as mobile phones and tablets spur on a scientific race to find smaller and smaller information processing and storage elements. One of the challenges in this race is to repro ... more		Salt under pressure is not NaCl In the very beginning of the school chemistry course, we are told of NaCl as an archetypal ionic compound. Being less electronegative, sodium loses its electron to chlorine, which, following the "oc ... more

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Russia's Putin pledges $1.5 billion for basic science research

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China's Yutu "naps", awakens and explores

China launches communications satellite for Bolivia

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Tempur-Pedic Mattress Comparison & Memory Foam Mattress Review

China's moon rover continues lunar survey after photographing lander		Orbital Launches Completes 40th Consecutive Successful Suborbital Rocket For NASA		Argentina successfully launches research rocket		NASA Satellite Sees Increase of India's Sulfur Dioxide Emissions		Astronauts remove faulty ammonia pump during first spacewalk after ISS coolant system goes wrong
SBIRS Geo-2 Missile Defense Early Warning Satellite Certified For Operation		Raytheon begins building 12th AN/TPY-2 ballistic missile defense radar		Researchers Design First Battery-Powered Invisibility Cloaking Device		'Macrocells' influence corrosion rate of submerged marine concrete structures		Toward lowering titanium's cost and environmental footprint for lightweight products

Roots of the Lithium Battery Problem

Sharpening the focus in quantum photolithography

UNIST research team opens graphene band-gap

Theorists Predict New State of Quantum Matter May Have Big Impact on Electronics

Targeted synthesis of natural products with light

Cellulose nanocrystals possible 'green' wonder material

Microprinting leads to low-cost artificial cells

Low-power tunneling transistor for high-performance devices at low voltage

Ultrafast heating of water - This pot boils faster than you can watch it

New system allows for high-accuracy, through-wall, 3-D motion tracking

DNA motor 'walks' along nanotube, transports tiny particle

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Europe's Gaia telescope detaches from Fregat-MT upper stage

Curiosity Team Upgrades Software, Checks Wheel Wear

NASA Releases New Earthrise Simulation Video

Japan researcher builds device to transmit 'force'

China, Koreas in modern conflict over ancient kingdom

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