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Eduardo Martin Moraud

On whether to re-brand space junk as "historical heritage"... - 3 views

www.latimes.com/...nk29-2010jan29,0,5698181.story

shared by Eduardo Martin Moraud on 29 Jan 10 - Cached
LeopoldS liked it
  • Eduardo Martin Moraud on 29 Jan 10
     
    For those working on space debris removal... Watch out for moon-protection activists that will accuse you of distroying a historical heritage: "There are countless places on Earth that have been awarded protection to preserve their historic or cultural importance. The moon has none. But that may be about to change...."
Joris _

NASA budget for 2011 eliminates funds for manned lunar missions - washingtonpost.com - 3 views

www.washingtonpost.com/...AR2010013101058.html

shared by Joris _ on 01 Feb 10 - Cached
  • NASA's grand plan to return to the moon, built on President George W. Bush's vision of an ambitious new chapter in space exploration, is about to vanish with hardly a whimper
  • a commercial spacecraft that could taxi astronauts into low Earth orbit
  • Obama budget as disastrous for human space fligh
  • Francesco Biscani on 01 Feb 10
     
    Personally I think this is great.
  • ...1 more comment...
  • Joris _ on 01 Feb 10
     
    what is great exactly ? No human beings will put a foot on the Moon, or Mars, in the next 22 yrs and more ... what an awful waste!
  • Francesco Biscani on 01 Feb 10
     
    Well, the constellation program was a waste of money in its current form, overrun by delays and insufficient budget. We would have had Apollo 2.0 sixty years later, for what? At least now they are talking about going to asteroids, martian moons and stuff like that.
  • Joris _ on 01 Feb 10
     
    I agree that Constellation was a mistake. It is though a pity that now human Mars missions would certainly happen even later than initially hoped.
Joris _

NASA Budget Request for FY11 - 2 views

www.nasa.gov/...Budget_Overview_1_Feb_2010.pdf

MAD Earth Science propulsion

shared by Joris _ on 04 Feb 10 - No Cached
  • Joris _ on 04 Feb 10
     
    Very interesting ... particularly slides 13 to 15 if you read between lines.
Eduardo Martin Moraud

Making Mars the new Earth - 4 views

ngm.nationalgeographic.com/...mars

shared by Eduardo Martin Moraud on 27 Jan 10 - Cached
  • Eduardo Martin Moraud on 27 Jan 10
     
    How National Geographics depicts terraforming... in case it gives ideas
  • Luzi Bergamin on 27 Jan 10
     
    "Total Recall" was better, wasn't it?
Joris _

NASA will miss Congressional deadline for asteroid tracking - Science Fair - USATODAY.com - 0 views

blogs.usatoday.com/...ine-for-asteroid-tracking.html

MAD NEO

shared by Joris _ on 25 Jan 10 - Cached
  • he panel finds the 2005 order to find 90% of Earth-threatening asteroids 460 feet or larger infeasible,
  • No method for diverting asteroids has been experimentally demonstrated
  • Options include a "gravity tractor" orbiting slow-moving objects and tugging them off course with tidal tugs, a "kinetic" impact of a heavy spacecraft into an asteroid, or a nuclear explosion
  • ...1 more annotation...
  • Unlike the dinosaurs, we are smart enough to do the math and figure out the answer that modest resources should be dedicated to the problem
    • Joris _
      Joris _ on 25 Jan 10
       
      "we are smart enough" is a completely subjective comment. Reading the article it does not give the same impression :|
Joris _

NASA could buy plasma engine for station reboost services - 1 views

www.flightglobal.com/...-station-reboost-services.html

nasa MAD low thrust

shared by Joris _ on 10 Mar 10 - Cached
  • enough to generate 1lb of thrust (0.00445kN) and fulfil the critical role of giving the Space Station a periodic altitude boost.
  • the most powerful electric engine in operation toda
  • , NASA is contracting Ad Astra Rocket for a lunar tug concept study, to take cargo from the Earth to the Moon and back, and deliver equipment in preparation for a human landing
pacome delva

A radon detector for earthquake prediction - 2 views

physicsworld.com/...42015

phy radon earthquakes

shared by pacome delva on 19 Mar 10 - Cached
  • a group of physicists, led by physics Nobel laureate Georges Charpak, has developed a new detector that could measure one of the more testable earthquake precursors – the suggestion that radon gas is released from fault zones prior to earth slipping.
Joris _

Consumer Goods Suck Up Surprising Amounts of Water : Discovery News - 0 views

news.discovery.com/...water-usage-industry.html

shared by Joris _ on 15 Mar 10 - Cached
  • The $1 bag of refined sugar in many American kitchens requires more than 283 gallons of water to produce.
  • LeopoldS on 16 Mar 10
     
    surprising? not really ...
  • Nicholas Lan on 18 Mar 10
     
    http://www.economist.com/research/articlesBySubject/displaystory.cfm?subjectid=7933596&story_id=13176056 similar info for beverages. coffee bad. particularly since i assume they're considering british coffee rather than a ristretto in rome
  • Ma Ru on 18 Mar 10
     
    ... which means that the quality-to-amount-of-water-used ratio is even more terrible.
Ma Ru

LHC 7TeV experiment webcast, TODAY 9:00-11:00 - 1 views

webcast.cern.ch/lhcfirstphysics

phy web science

shared by Ma Ru on 30 Mar 10 - Cached
  • Ma Ru on 30 Mar 10
     
    Watch the Earth vanish in a back hole again.
pacome delva

Mapping Turbulence in the Solar Wind - 0 views

focus.aps.org/st16

phy astrophysics solar_wind formation_flying turbulence

shared by pacome delva on 03 May 10 - Cached
  • a team reports studying the turbulent flow of solar wind particles by monitoring the accompanying waves of magnetic field. The team used a cluster of satellites to measure the field in unprecedented spatial detail. They found that the waves aren't equally strong in all directions but are larger in certain preferred directions, as theorists had predicted. The observation will help astrophysicists better understand the consequences of the solar wind, including its effect on the transmission of cosmic rays, particles that arrive at Earth from elsewhere in our galaxy.
Joris _

DARPA Looking for Partner On Wireless Spacecraft Demo | SpaceNews.com - 1 views

www.spacenews.com/...-wireless-spacecraft-demo.html

darpa technology fractionned

shared by Joris _ on 27 Apr 10 - Cached
LeopoldS liked it
  • DARPA for several years has been working on a program dubbed System F6 that seeks to prove that a cluster of small spacecraft can perform the mission of a large spacecraft by communicating wirelessly with one another in space
  • DARPA plans to launch three dedicated System F6 spacecraft either to low Earth orbit or geostationary orbit in mid-2013 to 2014
  • semi-autonomous cluster reconfiguration
Luís F. Simões

Russian Physicists Solve Radio Black-Out Problem for Re-Entering Spacecraft  ... - 1 views

www.technologyreview.com/...26222

radio communications re-entry plasma military

shared by Luís F. Simões on 05 Jan 11 - No Cached
  • When spacecraft return to Earth, one of the tensest parts of the mission is the radio black out that occurs as the vehicle re-enters the atmosphere. Travelling at hypersonic speeds of between Mach 8 and 15, the spacecraft heats and breaks down molecules in the atmosphere causing a plasma to form. It is this plasma sheath that prevents radio communication.
  • Ref: arxiv.org/abs/0704.3103: Communication Through Plasma Sheaths
Luís F. Simões

Boeing probes international market for human spacecraft - 1 views

spaceflightnow.com/...10cst100

human spaceflight commercial spaceflight

shared by Luís F. Simões on 11 Feb 11 - No Cached
  • The aerospace powerhouse is designing and testing systems for its CST-100 space capsule, a craft the company says could begin flying astronauts to low Earth orbit by 2015. It will launch on existing rockets to lessen development risk and costs.
  • "The spacecraft that we're designing is rocket-agnostic. It would be possible to sell this like a commercial airplane to countries who perhaps have a launch vehicle who would like to launch it in their own country."
  • Luís F. Simões on 11 Feb 11
     
    ...and hitting the news in the same day: A Rocket Built from U.S. and European Parts "A new rocket that would combine parts from NASA's canceled Ares I rocket as well as the Ariane 5 , a well-proven European satellite launcher, could provide a low-cost option for taking crew and cargo to the space station. The rocket proposal was announced this week by ATK, an aerospace and defense company that manufactures the solid rocket motors for NASA's space shuttles, and Astrium, the European company that makes the Ariane 5. They say the rocket, called Liberty, would be ready for flight by 2015." "Other commercial companies, including Boeing and Orbital Sciences Corporation, are looking to use low-end versions of the Atlas V to carry the capsules they are building. Liberty could carry any capsule at a cost less than that of the Atlas V, according to ATK." Look! Competition! :)
Ma Ru

Flea's jumping ability explained - 3 views

news.bbc.co.uk/...9391478.stm

BIO PHY science flea

shared by Ma Ru on 11 Feb 11 - No Cached
LeopoldS liked it
  • Ma Ru on 11 Feb 11
     
    Very ACT-ish...
Luís F. Simões

Europe's Plan to Move An Asteroid - Technology Review - 3 views

www.technologyreview.com/...27028

asteroid deflection

shared by Luís F. Simões on 02 Aug 11 - No Cached
LeopoldS liked it
  • In 2002, the European Space Agency began a program called Don Quijote to find out how best to perform such a deflection.
  • Now, Stephen Wolters at the Open University in the UK and a few friends have published a new analysis of the mission saying that measuring the change in orbit is not enough. Instead, the spacecraft needs to characterise the impact in detail, determining the density of the material near the asteroid's surface, the size of the surface grains as well as the mass and speed distribution of the impact ejecta.
  • Ref: arxiv.org/abs/1107.4229: Measurement Requirements For A Near-Earth Asteroid Impact Mitigation Demonstration Mission
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