posted Nov 26, 2011 12:32 PM by Solar Life
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updated Nov 27, 2011 7:18 AM
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NASA launches super-size Mars rover to red planet
8 months travel to Mars - $2.5bn It will take 8½ months for Curiosity to reach Mars following a journey of 354 million miles. An unmanned Atlas V rocket hoisted the rover, officially known as Mars Science Laboratory,
Los Alamos National Laboratory's Roger Wiens, a planetary scientist in charge of Curiosity's rock-zapping laser machine, called ChemCam. Curiosity in place art rendering
1-ton nuclear-powered laboratory The 1-ton Curiosity — as large as a car — is a mobile, nuclear-powered laboratory holding 10 science instruments that will sample Martian soil and rocks, and analyze them right on the spot. There's a drill as well as a stone-zapping laser machine.
If Russinan Mars craft would fall with 4kg Plutonium Just two weeks ago, a Russian spacecraft ended up stuck in orbit around Earth, rather than en route to the Martian moon Phobo, what would happen if it 4kg Plutonium on board falling back to Earth
Landing: "We call it the 'six-minutes of terror,'"The 1,980-pound (898 kg) rover is too big for the airbag or thruster-rocket landings used on previous Mars probes, so engineers designed a rocket-powered "sky-crane" to gently lower Curiosity to the crater's floor via a 43-foot (13-meter) long cable. "We call it the 'six-minutes of terror,'" said Doug McCuistion, director of NASA's Mars Exploration Program, referring to the risky landing. "It is pretty scary, but my confidence level is really high." Curiosity is powered by heat from the radioactive decay of plutonium. It is designed to last one Martian year, or 687 Earth days.
| Mars: la croisière radioactive du robot Curiosityscience et santé - 26/11/2011
Les pionniers sur Mars risqueront d'être exposés à une contamination radioactive d'origine humaine
Plutonium 238 Ce samedi après-midi, la Nasa a lancé son robot d'exploration vers la planète Mars qu'il atteindra en août. Un voyage sous haute surveillance en raison du combustible employé: du plutonium 238.
Curiosity 4kg Plutonium powered Mars rover
Une pollution... martienne. "Après 23 mois d'activités Curiosity deviendra un véhicule abandonné sur le sol de Mars avec tout un tas de déchets de laboratoire et ses kilos de plutonium",
Pour le cas, improbable, d'une explosion après le décollage, la NASA a prévu des conteneurs de plutonium avec des boucliers protecteurs renforcés par rapport aux expéditions précédentes. Reste que l'association Robin des Bois se veut méfiante, craignant que, "s'il était vaporisé et inhalé, le plutonium aurait des effets cancérogènes à très faible dose."
Mars 13% Plutonium Radioactivity after 250 years Et de préciser ses calculs: sachant que la demi-vie du plutonium est de 87,7 ans. 264 ans après sa production, il dégage encore 12,5 % de sa radioactivité initiale. Conclusion: "Si dans le siècle à venir Mars fait l'objet d'une colonisation expérimentale, les pionniers risqueront d'être exposés à une contamination radioactive d'origine humaine".
1kg US Plutonium in Space 1964Robin des Bois rappelle qu'en 1964, un satellite espion américain contenant 1 kilo de plutonium s'était désintégré accidentellement à 50 km d'altitude et que ses poussières de plutonium avaient contaminé l'atmosphère terrestre. Idem en 1968 pour un satellite météorologique américain s'étant abîmé dans l'océan Pacifique.
Reader comments On a pas assez pollué notre planète que maintenant on va pouvoir polluer ailleurs
Alarme!
Voici donc à nouveau notre mère nature menacée par le diable nucléaire. Cet évènement prouve à l'évidence que fermer nos cntrales nucléaire ne suffira pas à préserver la terre d'un désastre.
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posted Sep 6, 2010 3:46 AM by Solar Life
Nasa is aiming to get closer to the Sun than ever before, with plans to plunge a car-sized unmanned spacecraft into the star's outer atmosphere.
Scientists hope to launch the Solar Probe Plus (SPP) sometime before 2018. Before it is destroyed by the sizzling temperatures exceeding 1,400C (2,550F), the craft will have to obtain valuable data about our parent star.The solar probe project is expected to cost in the region of about $180m source: bbc.co.uk | Comment:
Not everything should be triedin the name of science:
To shoot an object size of car
into the SUN may have unknown
effects, which we never considered
up to now ?
Next negative step ?
Shooting nuclear waste from
Earth into the Sun (France)
Where do we think Mr. Goethe
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posted Oct 30, 2009 9:03 AM by Solar Life
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updated Jan 12, 2010 3:03 PM
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Nuclear electric, low efficiency Russian space agency plan to build NUCLEAR space rocket ship would use a nuclear reactor to run an electric rocket engine.
reader comment: The only planetary mission currently considered by Russia is a plan to send a probe to one of Mars' twin moons, Phobos. It was set to launch this year, but was delayed. I just hope that it is more succesful than their nuke submarines or Chernobyl. Russians don't seem to do Nuclear very well.
Risk Nuclear waste in space, no ! Nuclear accidents during start ! Ethical non-acceptable for other possible space civilizations
Russia will spend $600 million on a nuclear-powered spacecraft to take men to Mars, and beyond. Is it safe? Environmentalists point to a long list of accidents with Soviet nuclear-powered satellites, including tthe crash over northern Canada, which spread radioactive debris over a wide area. Earlier this year, a US Iridium communications satellite collided in space with another Russian atomic-powered military satellite, Kosmos 2251, creating what scientists described as a huge potentially hazardous cloud of debris in near-Earth orbit. “The main danger with any nuclear activity in space comes with the transporting of these materials into orbit, and the sometimes unscripted return of them into the atmosphere,” says Vladimir Chuprov, an energy expert with Greenpeace-Russia. source: csmonitor.com
Update Jan-12-2010 source: businessinsider.comIT'S BACK: Russia Revives Plans For A Nuclear Rocket $1bn
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posted Oct 20, 2009 2:40 PM by Solar Life
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updated Oct 20, 2009 2:55 PM
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Clean Space: No nuclear waste on the moon !
U.S. planning for 2020 to install Nuclear power plant for moon base supply
Public concerned about Nuclear The reactor ought to provide much more power than solar panels but could prove controversial with the public concerned about launching a nuclear power source and placing it on the Moon |
posted Oct 9, 2009 1:26 PM by Solar Life
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updated Oct 10, 2009 3:06 AM
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