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Luís F. Simões

William Shatner Wakes Up Crew for Final Discovery Mission - Slashdot - 1 views

  • The Space Shuttle Discovery left the International Space Station this morning for the last time. To commemorate the ship's accomplishments over 27 years of service, the crew was greeted to a morning wake-up message from Capt. Kirk. "Space, the final frontier," Shatner said in a prerecorded message. "These have been the voyages of the space shuttle Discovery. Her 30-year mission: to seek out new science, to build new outposts, to bring nations together on the final frontier, to boldly go and do what no spacecraft has done before."
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    here's a recording of the transmission: http://ia600406.us.archive.org/13/items/STS-133/03-07-11_STS-133_FD12_Crew_Wakeup.mp3 to quote from the thread at reddit: "When the space shuttle first flew, 55 americans were being held hostage in the embassy in Iran, and Ronald Reagan had just become president. That same year Prince Charles would marry Lady Diana, the HIV virus would be first identified, Post-It notes were invented, and a small company called Microsoft released it's new operating system MS-DOS."
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    Speaking of William Shatner, the legendary "Rocket Man": http://www.youtube.com/watch?v=5hARDXYz2io
anonymous

Nasa validates 'impossible' space drive (Wired UK) - 3 views

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    NASA validates the EmDrive (http://emdrive.com/) technology for converting electrical energy into thrust. (from the website: "Thrust is produced by the amplification of the radiation pressure of an electromagnetic wave propagated through a resonant waveguide assembly.")
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    I would be very very skeptic on this results and am actually ready to take bets that they are victims of something else than "new physics" ... some measurement error e.g.
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    Assuming that this system is feasible, and taking the results of Chinese team (Thrust of 720 mN http://www.wired.co.uk/news/archive/2013-02/06/emdrive-and-cold-fusion), I wonder whether this would allow for some actual trajectory maneuvers (and to which degree). If so, can we simulate some possible trajectories, e.g. compare the current solutions to this one ? For example, Shawyer (original author) claims that this system would be capable of stabilizing ISS without need for refueling. Other article on the same topic: http://www.theverge.com/2014/8/1/5959637/nasa-cannae-drive-tests-have-promising-results
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    To be exact, the chinese reported 720mN and the americans found ~50microN. The first one I simply do not believe and the second one seems more credible, yet it has to be said that measuring such low thrust levels on a thrust-stand is very difficult and prone to measurement errors. @Krzys, the thrust level of 720mN is within the same range of other electric propulsion systems which are considered - and even used in some cases - for station keeping, also for the ISS actually (for which there are also ideas to use a high power system delivering several Newtons of thrust). Then on the idea, I do not rule out that an interaction between the EM waves and 'vacuum' could be possible, however if this would be true then this surely would be detectable in any particle accelerator as it would produce background events/noise. The energy densities involved and the conversion to thrust via some form of interaction with the vacuum surely could not provide thrusts in the range reported by the chinese, nor the americans. The laws of momentum conservation would still need to apply. Finally, 'quantum vacuum virtual plasma'.. really?
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    I have to join the skeptics on this one ...
ESA ACT

Internet Archive: Wayback Machine - 1 views

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    You can find here also the old ACT website from 2003...
LeopoldS

self archiving open access - 4 views

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    interesting information - was not that clear to me instead of doing this via mendeley, we should go over our act publication page and upload all those pdf that fall into this category ...
Joris _

Making space exploration pay with asteroid mining - 1 views

  • Asteroids happen to be particularly rich in platinum group metals
  • a motive for space travel beyond "the pursuit of knowledge"
  • So to those despairing about the recent cutting of space budgets across the world, invest your savings in asteroid mining
Joris _

Up telescope! Search begins for giant new planet - 1 views

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    well, he kind-of falls into his own trap: confusing/discussing "evidence" with "likelihood", and "there is" with "it may". He should have made more efforts in his writing, what he says is a bit pointless! (just put the Icarus' paper)
Christos Ampatzis

Academic publishers make Murdoch look like a socialist - 4 views

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    Who are the most ruthless capitalists in the western world? Whose monopolistic practices make Walmart look like a corner shop and Rupert Murdoch a socialist? You won't guess the answer in a month of Sundays. While there are plenty of candidates, my vote goes not to the banks, the oil companies or the health insurers, but - wait for it - to academic publishers.
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    fully agree ... "But an analysis by Deutsche Bank reaches different conclusions. "We believe the publisher adds relatively little value to the publishing process … if the process really were as complex, costly and value-added as the publishers protest that it is, 40% margins wouldn't be available." Far from assisting the dissemination of research, the big publishers impede it, as their long turnaround times can delay the release of findings by a year or more." very nice also: "Government bodies, with a few exceptions, have failed to confront them. The National Institutes of Health in the US oblige anyone taking their grants to put their papers in an open-access archive. But Research Councils UK, whose statement on public access is a masterpiece of meaningless waffle, relies on "the assumption that publishers will maintain the spirit of their current policies". You bet they will. In the short term, governments should refer the academic publishers to their competition watchdogs, and insist that all papers arising from publicly funded research are placed in a free public database. In the longer term, they should work with researchers to cut out the middleman altogether, creating - along the lines proposed by Björn Brembs of Berlin's Freie Universität - a single global archive of academic literature and data. Peer-review would be overseen by an independent body. It could be funded by the library budgets which are currently being diverted into the hands of privateers. The knowledge monopoly is as unwarranted and anachronistic as the corn laws. Let's throw off these parasitic overlords and liberate the research that belongs to us."
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    It is a really great article and the first time I read something in this direction. FULLY AGREE as well. Problem is I have not much encouraging to report from the Brussels region...
ESA ACT

Karl Blossfeldt Archiv - 0 views

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    The work of a german photographer on forms in plant. Inspiring but not scientific.
ESA ACT

http://www.lbl.gov:80/Science-Articles/Archive/ESD-protein-sweepers.html - 0 views

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    Science In nature, proteins sweep up nanoparticles
ESA ACT

Twibright Optar - 0 views

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    Optar stands for OPTical ARchiver. It's a codec for encoding data on paper. A proposal for fighting the digital obsolescence: Digital obsolescence is a situation where a digital resource is no longer readable because the physical media, the reader require
LeopoldS

How I ended up with Mac - Miguel de Icaza - 2 views

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    from a linux guru ...
Wiktor Piotrowski

Ultra-efficient LED puts out more power than is pumped in - 4 views

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    Nice.
jaihobah

Yuri Milner and Mark Zuckerberg Plan Interstellar Mission to Alpha Centauri - The Atlantic - 1 views

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    Behind the scenes story of this whole Starshot thing
LeopoldS

NASA DARPA beamed energy propulsion report - 1 views

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    Comprehensive report on beamed energy propulsion
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    whatever you want to know about bep you will find it somewhere at these 650 pages.
Nicholas Lan

Google Seeks To Plant Antenna Farm in Iowa » Data Center Knowledge - 0 views

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    Google subsidiary Google Fiber, Inc. is seeking permission to place satellite antennas on land near its data center in Council Bluffs, Iowa. The antennas could be used to receive content feeds from broadcast networks that could be bundled with a high-speed fiber service.
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    an oddly similar story http://venturebeat.com/2012/02/20/apple-is-solar-friendly/ apple to build largest solar array in US
jmlloren

Cool Tools - Systemantics - 1 views

shared by jmlloren on 26 Feb 14 - No Cached
dejanpetkow liked it
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    We begin at the beginning, with the Fundamental Theorem: New systems mean new problems.
Thijs Versloot

Role of data visualization in the scientific community @britishlibrary - 1 views

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    In a new exhibition titled Beautiful Science: Picturing Data, Inspiring Insight [bl.uk], the British Library pays homage to the important role data visualization plays in the scientific process. The exhibition can be visited from 20 February until 26 May 2014, and contains works ranging from John Snow's plotting of the 1854 London cholera infections on a map to colourful depictions of the Tree of Life.
johannessimon81

Air pollution weakens hurricanes - 3 views

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    Problem solved.
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    Also, tornados could be stopped from forming by building 300 m tall, 100 km long walls across the USA: http://www.wired.co.uk/news/archive/2014-03/08/tornado-walls
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    Those would also work very well to keep the Kaiju's out..
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    Good point!
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