NASA'S Spitzer Finds Distant Galaxies Grazed On Gas
Updated: 2011-06-30 22:36:55
On Orbit: Galaxies once thought of as voracious tigers are more like grazing cows, according to a new study using NASA's Spitzer Space Telescope. Astronomers have discovered that galaxies in the distant universe continuously ingested their star-making fuel over long periods of time. This goes against previous theories that galaxies devoured their fuel in quick bursts after run-ins with other galaxies. read more
HobbySpace Blog: Here's an interview with Edmund Kelly of StratoSolar about the firm's plans for development of high altitude solar power stations/airships that return power to earth via tethers: Meeting all of the earth's energy needs with tethered platforms - NextBigFuture.com.
Some new research may make NASA reconsider its “no alcohol in space” policy. A new study suggests that the “healthy” ingredient in red wine, resveratrol, may prevent the negative effects that weightlessness has on muscle and bone metabolism. This also could apply to people who live sedentary lifestyles. (...)Read the rest of Reason to Serve [...]
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 30, 2011 Efficiently solving Rubik Cubes of any size Erik Demaine , an associate professor of computer science and engineering at MIT his father , Martin , Demaine a visiting scientist at MIT’s Computer Science and Artificial Intelligence Laboratory graduate student Sarah Eisenstat Anna Lubiw , who was Demaine’s PhD thesis adviser at the University of Waterloo and Tufts graduate student Andrew Winslow showed that the maximum number of moves required to solve a Rubik’s cube with N squares per row is proportional to N2 log N . That that’s the answer , and not N2, is a surprising thing , 8221 Demaine . says The standard way to solve a Rubik’s cube , Demaine explains , is to find a square that’s out of position and move it
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 30, 2011 Meeting all of the earth's energy needs with tethered platforms A tethered platform hovering at an altitude of 20 kilometers would operate in the stratosphere , above most clouds and weather . At that altitude , a platform covered with photovoltaic cells would be able to collect considerably more sunlight than a ground-based solar collector . A company called stratosolar has developed a proposal to use either concentrated solar collectors or straight photovoltaic cells to generate electricity . Such schemes could potentially bring the cost of solar power down to 1 cent per kilowatt-hour . In an interview with Sander Olson , StratoSolar President Edmund Kelly describes what will be needed to make this concept a .
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 29, 2011 Current and Future Superconducting Wire Markets to 2017 Development of 2G HTS Wire for Demanding Electric Power Applications 30 pages , by Superpower Inc Superpower Inc is improving the cost performance of its superconducting wire and is expecting major market gains over the next few . years If you liked this article , please give it a quick review on ycombinator or StumbleUpon Thanks Posted by bw at 6 29 2011 Labels : commericialization economic impact Economics energy future smart grid superconductors Current and Future Superconducting Wire Markets to 2017 Development of 2G HTS Wire for Demanding Electric Power Applications 30 pages , by Superpower Inc Superpower Inc is improving the cost performance of its
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 29, 2011 2G HTS Wire for High Magnetic Field Applications 2G HTS Wire for High Magnetic Field Applications 37 pages , May 27, 2011 10-fold improvement by combination of higher self-field critical current and improved retention of in-field performance through technical . innovations Even at 4.2 K , 15 T , 2G HTS wire is comparable now with Nb3 Sn wire . Opportunity to improve to be 10X better than Nb3 Sn If you liked this article , please give it a quick review on ycombinator or StumbleUpon Thanks Posted by bw at 6 29 2011 Labels : future magnets physics superconductors 2G HTS Wire for High Magnetic Field Applications 2G HTS Wire for High Magnetic Field Applications 37 pages , May 27, 2011 10-fold improvement by
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 29, 2011 Laser enabled megawatt class fusion propulsion IEEE Spectrum John J . Chapman , a NASA engineer , is proposing nuclear fusion propulsion for space satellites and space . probes He made a presentation at the IEEE Symposium on Fusion Engineering in . Chicago In Chapman’s aneutronic fusion reactor scheme , a commercially available benchtop laser starts the reaction . A beam with energy on the order of 2 x 10^18 watts per square centimeter , pulse frequencies up to 75 megahertz , and wavelengths between 1 and 10 micrometers is aimed at a two-layer , 20-centimeter-diameter . target IO4A-6 Advanced Fusion Reactors for Space Propulsion and Power Systems J . J . Chapman , Engineering Division , NASA , Hampton , VA ,
, skip to main skip to sidebar Pages Home Timeslide View Flipcard June 29, 2011 Current Status , Technical Feasibility and Economics of Small Nuclear Reactors Current Status , Technical Feasibility and Economics of Small Nuclear Reactors OECD , June 2011, 177 pages Small and modular reactors should be competitive with non-nuclear technologies for generating electricity in cases where large nuclear power plants cannot compete for whatever . reason If you liked this article , please give it a quick review on ycombinator or StumbleUpon Thanks Posted by bw at 6 29 2011 Labels : china Economics energy future nuclear world Current Status , Technical Feasibility and Economics of Small Nuclear Reactors Current Status , Technical Feasibility and Economics of Small Nuclear Reactors OECD , June 2011,
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 29, 2011 Google Plus is the latest attempt by Google at Social Networking Google Plus is currently only usable by selected users on a field trial . basis During this invite-only stage , Google+ has four components : Circles , Hangouts , Mobile and . Sparks This is different from the 1 button that was introduced in March , 2011. Vic Gundotra , Google senior vice president of Engineering , introduced Google Plus Circles : share what matters , with the people who matter most Not all relationships are created equal . So in life we share one thing with college buddies , another with parents , and almost nothing with our boss . Google is trying to provide more privacy . control Hangouts- multi-user video chat system Mobile-
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 28, 2011 Inkjet printing could change the face of solar energy industry Solar cell This scanning electron microscope , cross-sectional image shows the various compounds of a new chalcopyrite solar cell only a few microns thick , which can be created much less expensively with inkjet printing . Image courtesy of Oregon State University Engineers at Oregon State University have discovered a way for the first time to create successful CIGS” solar devices with inkjet , printing in work that reduces raw material waste by 90 percent and will significantly lower the cost of producing solar energy cells with some very promising . compounds High performing , rapidly produced , ultra-low cost , thin film solar electronics should be
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 28, 2011 Brillouin Energy energy pulse process and respectable advisors New Energy and Fuel has some additional information about Brillouin Energy . Corp I covered Brillouin Energy a few days ago Brillouin Energy is in Berkeley California has another Low Energy Nuclear Reaction LENR method in the development and proving stage . The new method comes at fusion from a different path than the Rossi . E-Cat Brillouin technique uses electromagnetic pulses on hydrogen or H1. The pulses push some of the hydrogen into dihydrogen or H2 and on to H3 and H4. Finally some hydrogen molecules reach the stage of helium . The method generates heat more heat energy than electrical energy used to run the . pulse Using a catalyst the method
: skip to main skip to sidebar SCIENCE FICTION FANTASY HISTORY SPACE AND OTHER SPECULATIONS Rocketpunk Manifesto Days of Future Past Monday , June 27, 2011 Space and Heresy Longtime readers of this blog know that I am somewhat heretical regarding the human future in space . As I first argued a couple of years ago outer space is profoundly unlike the New World such an evocative phrase that Europeans encountered five centuries ago and proceeded to loot and colonize This heresy has come up in , and spilled across , a couple of recent comment threads , especially the one for the previous post And yes , it was nearly three weeks ago . What can I say June sort of slipped through my fingers . As heresies go it raises enough interesting questions to deserve a front page . post Space is , for one
Subscribe Give a Gift Archives Customer Service SEARCH Health Medicine Mind Brain Technology Space Human Origins Living World Environment Physics Math Video Photos Podcast RSS Llama ahora New York makes gay marriage legal . Excelsior RV-sized asteroid will buzz the Earth on Monday A rock about 10 meters in size will fly past the Earth Monday at 13:30 UTC 09:30 Eastern US time 17:01 UTC 13:01 Eastern US time Note : the time of closest approach was updated this morning June 27 It’ll be a particularly close shave passing just 12,400 km 7430 miles from Earth’s surface a bit less than the diameter of the Earth itself but it’ll miss for . sure Update 2 : Images and an animation of the asteroid are now up at the Remanzacco Observatory blog thanks to NickAstronomer on Twitter for the tip We’re in
If you take a look at the latest issue (July, 2011) of the National Geographic Magazine, you will find a short, 2-page article about the Space Elevator, complete with a custom-drawn, concept diagram.
A few of us (Ben Shelef, Dr. Peter Swan and myself) have been working with the National Geographic team over the past several [...]
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Dr. Paul Spudis: Cislunar Space - The Next Frontier. Dr. Spudis, of the Lunar and Planetary Institute in Huston, was presented the 2011 NSS Space Pioneer Award for Scientific and Engineering Paper for his paper on “Mission and Implementation of an Affordable Lunar Return.” 32 minute video (slides and paper included).