Portal De Tecnologia y Ciencias

Portal De Tecnologia y Ciencias

domingo, 20 de abril de 2014

Las seis organizaciones que controlan Internet

Tecnología y redes – Hace 11 horas Correo-e Compartir 8 Tweet Imprimir Si hoy en día preguntásemos quién es el dueño de Internet, la mayoría de vosotros contestaría que Google. Una respuesta de lo más lógica, ya que el 60% de dispositivos que se conectan a la Red utilizan a diario alguno de sus servicios, y sus páginas representan más del 25% del tráfico mundial. Tampoco sería descabellado que pensarais en Microsoft o Apple o Facebook, otras tres compañías cuyos productos son utilizados a diario por millones de personas, que acumulan beneficios monstruosos y que no paran de salir en los medios de comunicación. Pues bien, estaríais equivocados. Ninguna de ellas son las que parten en el bacalao en Internet. Según la web WhoIsHostingThis.com, las organizaciones que controlan el ciberespacio son 6 y prácticamente son desconocidas para el gran público. [Relacionado: El gran centro de espionaje de Internet] Mapa de Internet La primera de ellas es la International Telecommunication Union. La ITU es el organismo especializado de las Naciones Unidas para las tecnologías de la información. Según explican en su web “Atribuimos el espectro radioeléctrico y las órbitas de satélite a escala mundial, elaboramos normas técnicas que garantizan la interconexión continua de las redes y las tecnologías, y nos esforzamos por mejorar el acceso a las TIC de las comunidades insuficientemente atendidas de todo el mundo.” Es decir, que la ITU reparte las frecuencias de radio, se asegura de que cada satélite de telecomunicaciones tenga su espacio y no choque contra otro y a la vez actúa como una especie de alto tribunal de Internet, decidiendo desconexiones o sanciones para grandes empresas. Entre sus objetivos está el que cada nación tenga el mismo porcentaje de gobierno en la Red, facilitar el acceso y reducir prácticas ilegales como el spam. No todos los países forman parte de la ITU: 89 han firmado su tratado, entre los que se encuentra EEUU y la Unión Europea, y 55 no lo han hecho, como Argentina, Brasil, China o Rusia. El Internet Architecture Board (IAB) es otro de esos popes. Supervisa el desarrollo técnico de la Red, por ejemplo vigilando que los estándares oficiales se cumplen, como los protocolos TCP o IP. Por decirlo de alguna manera, los miembros del IAB se preocupan de la salud de Internet y supervisan que su crecimiento sea el adecuado para que no haya fallos que supongan una merma de su calidad. Si la IAB tiene un perfil más técnico, The Internet Society es mucho más social. La filosofía de este grupo es la de que Internet es para todo el mundo. Supervisa que la red mantenga su integridad y que ningún Gobierno o empresa la rompa. Por ejemplo, en noviembre de 2013 esta organización emitió un comunicado denunciando que las leyes de propiedad intelectual que estaban siendo aprobadas por diversos Gobiernos occidentales estaban demasiado enfocadas en los intereses particulares de un puñado de empresas, en vez de defender los derechos de los usuarios. La Internet Engineering Task Force es otro grupo de marcado carácter técnico que se dedica a crear informes sobre cómo debería ser el futuro de la Red. Su leyenda sería “Queremos que Internet funcione mejor” y todos sus esfuerzos van en esa dirección. Otro organismo que controla el ciberespacio es la Internet Corporation for Assigned Names and Numbers. Su función es la de que no haya dos IP o dos nombres de dominio iguales. Desde esta organización se encargan de que todas las páginas estén literalmente en su sitio, y no pisándose unas a otras. El sexto y último lugar lo ocuparían las empresas proveedoras de servicio. AT&T, Vodafone, Movistar, Verizon... las grandes operadoras tienen mucho poder en Internet; son ellas las que dan acceso a la Red a empresas y particulares, y las que fijan el precio de un bien que muchos ya piden que sea universal. 12 trucos para proteger tu seguridad en Internet Cada vez existen más sitios donde puedes navegar por Internet de forma gratuita, más dispositivos con los que poder acceder y más gestiones que puedes tramitar online. Pero, también, existen más métodos que permiten a los hackers entrar fácilmente a nuestros ordenadores. ¿Cómo podemos evitarlo? Cerrar la sesión de tus cuentas, navegar de forma anónima por Internet o cambiar tu contraseña de forma habitual, son algunos de los consejos para prevenir posibles usos fraudulentos de nuestros datos y contraseñas. Aquí te damos algunos trucos para prevenirlo, ¿quieres saber cuáles son? Relacionados: ¿Cómo saber si te roban el WiFi? / ¿Cómo nos afecta la tecnología? Cerrar la sesión cuando navegues en lugares públicosDebes saber que tu navegador no supone un anonimato total, por lo que puedes ser susceptible de robo de datos sensibles. Algunos consejos para ... más

Quinta da Regaleira, la villa "iniciática" de Sintra

Si recorrer las calles y monumentos de la localidad portuguesa de Sintra, declarada Patrimonio de la Humanidad por la UNESCO, ya constituye un sorprendente viaje que parece transportarnos a un mundo de cuento –gracias en especial a sus formidables muestras de arquitectura romántica ehistoricista, como el Palacio da Pena–, uno de sus rincones más singulares nos sumerge aún más en ese ambiente de misterio. No en vano, la conocida como Quinta da Regaleira –una finca compuesta por laberínticos y exuberantes jardines y exóticas muestras de arquitectura–, posee la fama de ser uno de los enclaves más enigmáticos de todo el territorio luso. La finca en la que se asienta desde hace poco más de un siglo la curiosa construcción pertenecía a mediados de siglo XIX a la baronesa de Regaleira –de ahí su nombre–, aunque a finales de la centuria, en 1894, fue adquirida en subasta pública por un peculiar caballero brasileño, el millonariodon António Augusto Carvalho Monteiro, a quien los vecinos apodarían como el de os milhões(los millones), debido a su abultada fortuna. Muy poco después de adquirir la propiedad, Monteiro contrató los servicios del arquitecto y escenógrafo italiano Luigi Manini, quien por aquellos años de cambio de siglo se encontraba trabajando en la construcción de varios teatros por todo el territorio portugués. En apenas dos años, entre 1895 y 1896, Manini y Monteiro trazaron los diseños de los jardines y, ya comenzado el nuevo siglo, en 1904, se iniciarían las obras de la mansión principal y la capilla, dos de los recintos más importantes del Palacio da Regaleira. http://l1.yimg.com/bt/api/res/1.2/W1cTTnz7JevqpIjZwBf75g--/YXBwaWQ9eW5ld3M7cT04NTt3PTYzMA--/http:/media.zenfs.com/es-ES/blogs/arte/DSC_2659.jpgConstrucción de estilo neomanuelino en los jardines | © Javier García Blanco. Aunque con la ayuda de Manini y su experta mano de arquitecto, todos y cada uno de los detalles decorativos de jardines y mansión fueron cuidadosamente escogidos por el millonario. Cuando acabaron las obras en 1911, la Regaleira era, a todas luces, el rincón más sugerente y misterioso de toda Sintra. Monteiro se había educado en Portugal, y había cursado la carrera de Derecho en la Universidad de Coimbra. Sin embargo, sus intereses iban mucho más allá de leyes, juzgados y tribunales. Poseedor de una vastísima cultura y un notable interés por la ciencia, Monteiro contaba con una abultada biblioteca que atesoraba todo tipo de tomos, desde los puramente literarios, pasando por otros dedicados a la filosofía, la ciencia, la masonería o las doctrinas herméticas. Como ya hemos visto en otras ocasiones, este interés por el ocultismo y las cuestiones esotéricas fue muy común en los últimos años del siglo XIX y comienzos del XX, y en especial entre personas de cierta cultura y posición social, y entre no pocos artistas. En el caso de Monteiro, y gracias a su enorme fortuna, su interés por estas cuestiones acabó cobrando forma de lujosa y excéntrica mansión rodeada por unos jardines no menos singulares. En ellos,Monteiro y Manini plasmaron el ideal de villa iniciática, creada a imagen del Cosmos y diseñada para ser recorrida siguiendo un itinerario concreto, símbolo de las distintas etapas del progreso intelectual y espiritual. http://l2.yimg.com/bt/api/res/1.2/0yW6Lv4azok_fPaOByCF0g--/YXBwaWQ9eW5ld3M7cT04NTt3PTYzMA--/http:/media.zenfs.com/es-ES/blogs/arte/DSC_2741.jpgVista parcial del "pozo iniciático" de la Quinta da Regaleira | © Javier García Blanco. Para ello, Monteiro escogió las ya de por sí exóticas formas del estilo neomanuelino, de moda en la época, además de abundantes elementos de influencia renacentista. La riquísima simbología contenida en jardines y mansión salta a la vista en cada esquina de la finca, y en ella descubrimos alusiones cultas a la mitología clásica, a la Divina Comedía de Dante, a Virgilio, la masonería –Hermandad a la que al parecer perteneció–, el arte de la alquimia o a la cruz de la Orden de Cristo, heredera del Temple en Portugal y a quien numerosos autores decimonónicos quisieron hacer poseedora de oscuros y poderosos secretos esotéricos. Al igual que sucede con los celebérrimos templarios, no hubo misteriosos secretos herméticos que custodiaran los caballeros de la Orden de Cristo, pero así lo creyeron no pocos autores desde mediados del siglo XIX, inspirados por las corrientes románticas del momento, y sin duda así lo creyó también Monteiro, plasmando tales creencias en la simbología sugerente Quinta. En cualquier caso, el resultado de aquellas creencias y de la fortuna del millonario brasileño, amante del arte, la ciencia y la filosofía, constituye hoy uno de los mayores tesoros de Sintra. Y al recorrer rincones como el enigmático pozo “iniciático” y sus oscuras escaleras en espiral, no es difícil dejar volar la imaginación y convencerse, aunque sea por un instante, de que estamos en un mundo mágico…

Escuchen

Esta canción del 1967, también me hace mucho mas sentido hoy. Que disfruten tanto su significado como yo lo he disfrutado hoy: Your Love Keeps Lifting Me Higher Lyrics Jackie Wilson Your love, lifting me higher Than I've ever been lifted before So keep it it up Which is my desire And I'll be at your side, forever more [Chorus] You know your love (your love keeps lifting me) Keep on lifting (love keeps lifting me) Higher (lifting me) Higher and higher (higher) I said your love (your love keeps lifting me) Keep on (love keeps lifting me) Lifting me (lifting me) Higher and higher (higher) Now once, I was downhearted Disappointment was my closest friend But then you came, and it soon departed And you know he never Showed his face again [Chorus] I'm so glad, I've finally found you Yes that one, in a million girls And I whip my loving arms around you I can stand up, and face the world

martes, 19 de noviembre de 2013

Elon Musk reveals his Hyperloop concept, vowing LA-to-San Fran travel in 30 minutes

f there's a barrier to thinking about the future, it comes from being so wedded to the present. When steam-powered passenger trains arrived in the 1800s, doctors worried riders might die from asphyxiation if they went faster than 60 mph. In our own time, hydrogen cars have never gained traction in part because the benefits have yet to seem worth the trouble. Then there's Tesla Motors co-founder Elon Musk's new idea called the Hyperloop, which he revealed today: an elevated, solar-powered train-in-a-tube that could whisk riders at supersonic speeds up to 900 miles. It sounds fantastic, and according to Musk could be built for less than a comparable magnetic-levitation train — roughly $6 billion for a Los Angeles-to-San Franciso route that would cut travel time to 30 minutes for a $20 ticket. "It would be cool to see a new form of transport happen," Musk says. But do we really need it? The proposal from Musk — a 57-page paper full of aerodynamic engineering concepts and economic discussion points — has as much connection to reality as a comic book at the moment. But Musk, a billionaire who founded and sold PayPal before Tesla, SpaceX and SolarCity, has the resources to explore ideas that most would turn down as unworkable, and once you build a reusable space capsule and a profitable electric car, why not broaden your horizons?
Musk describes the Hyperloop as essentially a solar-powered version of the pneumatic tubes once common in offices and drive-through bank branches. By riding on pressurized air, with a compressor fan at the front of the capsules, the vehicles could accelerate up to 760 mph without the disruptive sonic booms supersonic aircraft produce. And despite the speeds, Musk says the accelerations would be limited to no more than what passengers face today: "It would feel like you were riding in an airplane, like you're riding in a cushion of air." To survive in California's earthquake-prone geography, the Hyperloop would be built on pillars designed to cushion the tube from tremors, a system that Musk contends would be safer than trains today. In fact, Musk contends if the Hyperloop tubes were coated in solar panels, they would generate more energy than the system uses and should be better in every dimension — cheaper, safer, more energy efficient and pleasant to travel in — than the current alternatives. As for the economics, by Musk's calculations the machinery inside the tube is relatively cheap — about $60 million or so. While the tube itself would cost $6 billion to build along Interstate 5 in California, if the Hyperloop ran at regular intervals it could pay for itself with passenger fares of $20 a ride over 20 years, at several million passengers a year. Musk contends the Hyperloop would work best for distances less than 900 miles; longer than that, airplanes make better sense.
After saying at first he was too busy to pursue the idea, Musk said Monday he would at least take it a little further. "I'm somewhat tempted to build at least a demonstration prototype," he said. "I could do some scale version and hand it over to someone else...I would like to see it come to fruition, and it might help if I did a demonstration article." The whole plan seems outlandish at first blush — but the current estimates for California's high-speed rail upgrade stand around $65 billion, for trains that many critics, including Musk, contend offer few benefits over today's tangle of roads and rails. Los Angeles expects to spend more than $6 billion extending its subway system 10 miles. Whether it's the right track or a dead end, with the Hyperloop Musk has succeeded in offering a provocative alternative to a more expensive future.

Chinese explorer Zheng He may have discovered America before Columbus, according to new book

Does a 600-year-old Chinese map prove that Christopher Columbus was not the first explorer to navigate the New World? In his book “Who Discovered America?,” published Tuesday, author Gavin Menzies says the settling of North America by nonnative peoples is more complex than previously thought. ‘The traditional story of Columbus discovering the New World is absolute fantasy, it’s fairy tales,” Menzies, 76, said in an interview with the Daily Mail. However, not everyone is sold on the theory. Menzies has been derided as a “pseudo-historian” by critics, who say his claims are grandiose and not based in historical fact. Menzies has primarily focused his studies on when and how North America was first explored but he has also argued that the mythological city of Atlantis was real. Menzies also has passionate supporters — his previous books have been best-sellers, and proponents of his theories have donated millions to his efforts, allowing him to hire a number of experts to join in his investigations. Menzies says that the Chinese map, found in a bookstore and created in the 18th century, is attributed to Chinese Admiral Zheng He and shows a detailed map of America dating back to 1418. That would place Zheng He’s efforts some 70 years ahead of Columbus. In fact, Menzies says Columbus used a copy of Zheng He's map to plot his own voyage. Zheng He — a Muslim eunuch — is arguably the most famous explorer in Chinese history. Deployed by the emperor, He led Chinese fleets on voyages of discovery that helped expand the empire’s knowledge of the world to include previously unknown areas in the Middle East and Africa. His influence over Asian culture was so strong thathe is still considered a god in parts of Indonesia. An appraiser from Christie’s has authenticated the map itself, but there is currently no way of proving the map was based on images drafted in the 1400s. However, Menzies says that certain observations on the map, including descriptions of communities and other cultural landmarks in Peru, coincide with known data from that period. In addition, Menzies makes an even broader claim in his book, saying that Chinese sailors were the first to cross the Pacific Ocean 40,000 years ago. Menzies says there is DNA evidence to support his claim. So how does Menzies believe the Chinese pulled off such a giant historical accomplishment thousands of years before anyone else? “If you just go out in a plastic bathtub, the currents will just carry you there,” Menzies told the Mail. “They just came with the current, it’s as simple as that.” The current historical version of events says that individuals from what is now Asia crossed into North America via a land bridge extending from the Bering Strait. Critics of Menzies point out that he holds no degrees or professional training as a historian. But the Daily Mail says he “can no longer be called an amateur” after his most recent efforts.

Slavery, disease, death: the dark side of the Christopher Columbus story

On Monday, the United States will observe Columbus Day, schools and banks closing and parades marching in honor of the man who, as we all learned in school, discovered America in 1492. And according to The Oatmeal’s Matthew Inman, Columbus Day is a dangerous farce. Inman contends in his current strip on The Oatmeal, a humor/political commentary website, that the legends we believe about Columbus are not only misleading but grossly unfair. He cites primary sources and journals recounted in Howard Zinn’s “A People’s History of the United States” and James Lowewen’s “Lies My Teacher Told Me” to dispel the traditional narrative of Columbus as brave traveler who connected the Old World and the New. Here are a few of The Oatmeal’s conclusions about Christopher Columbus: • In 1492, no one actually thought the earth was flat. “Pretty much anyone with an education knew the earth was round. The Greeks had proved it 2,000 years before Columbus was born.” • Columbus didn’t actually “discover” the New World. Not only were there natives living in the Americas for 14,000 years, Leif Ericson found the same territory 500 years before Columbus. • Columbus wanted gold, and lots of it. His initial ideas for a new trade route to Asia fell by the wayside as he realized how much gold was available in the New World. • The natives would provide little resistance. According to his own journal, Columbus believed the indigenous Lucayans would not be a significant challenge. “I could conquer the whole of them with fifty men,” he wrote, “and govern them as I pleased.” • For his second visit, Columbus armed for war. When Columbus returned to the New World, he brought 17 ships and 1,500 men. • Columbus treated the natives brutally. Columbus demanded treasure, food and sex for his men, and when the Lucayans refused, he ordered their noses and ears cut off to serve as a warning. • Columbus treated his conquered people harshly. When the Lucayans rebelled, Columbus crushed the rebellion and carted off 500 Lucayans to be sold into slavery in Europe. • Columbus disrupted the entire economy of three continents. Post-Columbian disease and starvation killed three to five million people over the next fifty years. And the influx of gold disrupted the global economy to the point that African slaves became a dominant commodity. http://l.yimg.com/bt/api/res/1.2/fU65tQS6WxL40UwNfphNZg--/YXBwaWQ9eW5ld3M7cT04NTt3PTYzMA--/http:/l.yimg.com/os/publish-images/news/2013-10-10/82d441c1-51cc-415b-9c0b-1da31db615b2_d1010cc2.jpg Via The Oatmeal In short, The Oatmeal contends, Columbus “discovered the New World much like a meteorite discovered the dinosaurs,” and yet is still honored with a federal holiday. Making the point impossible to miss: “The father of the transatlantic slave trade is honored on the same level as Abraham Lincoln and Martin Luther King Jr.” As a replacement, The Oatmeal suggests Bartolome de los Casas, a wealthy plantation owner who sold off his holdings, freed his slaves, turned to the priesthood, and fought for the dignity of native Americans. In other words, The Oatmeal suggests, Columbus Day might be worth celebrating if it were named for someone else.

Finally, the Underwater Wireless Modem We’ve All Been Waiting For

Researchers from the University at Buffalo on Lake Erie. Photo: Douglas Levere/University at Buffalo You can use the internet in Antarctica. You can tweet from the International Space Station. And wireless internet blankets much of the globe. But go underwater and it’s pretty hard to find TCP/IP. Until now, that is. Welcome to the Internet of Things, undersea edition. Researchers at the University at Buffalo have floated their first wireless internet modems, designed for underwater use. They’re gigantic, slow, and noisy, but they could be a step toward making undersea sensors cheaper and easier to hook up to the rest of the world. On a warm fall afternoon last month, the Buffalo researchers chartered a 25-foot yacht, sailed out into Buffalo’s Small Harbor and dropped three of the yellow 40-pound acoustic modems into the placid waters of Lake Erie. The Teledyne Benthos modems, which resemble oversized tinker toy components, talk underwater using a high-pitched chirping sound, which can be easily picked up at about 1 kilometer’s range. Typically they use their own networking protocols, but funded by a National Science Foundation grant, the University at Buffalo team has plugged them into a Gumstix Linux board and reprogrammed the modem to speak an aquatic version of TCP/IP — the networking protocol that all devices on the Internet use to communicate with each other. “This means that you can take an underwater network and make it accessible through the internet,” says Tommaso Melodia, the professor at the University at Buffalo who is leading the research effort. He sees these networked underwater sensors doing everything from monitoring for tsunamis to scouting for submarines to helping with deep sea exploration. But these networks are very, very slow. In fact, that’s why Melodia and his team had to rewrite TCP/IP. On dry land, we can use high frequency radio waves to transmit our internet data at near-light speeds. They’re fast, high-bandwidth and inaudible. But radio doesn’t do so well underwater. There you need acoustic networking. It’s slow, low bandwidth and audible to both humans and sea creatures. http://www.wired.com/wiredenterprise/wp-content/uploads/2013/10/3x5a6718-315x207.jpg Photo: Douglas Levere/University at Buffalo So the University at Buffalo researchers had to get their modems to work even when there is a very long wait time as packets are chirped underwater from modem to modem. “You go pretty much at the same data rates that you would be able to achieve with a modem in the ’80s; it’s a few kilobits per second at most, and often less than that,” says Melodia. That’s not enough to broadcast a video stream from the deep seas, but if you want to hack together a deep sea sensor that could tweet out a Tsunami warning, it would do just fine. In the future, Melodia wants to develop a high frequency version of the modem, which would be less likely to affect marine life. “Underwater and acoustic networking are still in their infancy, and are evolving,” he says, adding, “much of our ongoing research in this field is trying to lay the basis for faster, more reliable, and secure… networks.” Melodia and his team will present a paper on their research, titled “The Internet Underwater: An IP-compatible Protocol Stack for Commercial Undersea Modems,” at an underwater networking conference in Taiwan next month.

Satellite spots light show in the middle of the ocean

Those weird lights in the middle of the Atlantic Ocean — what are they? Are they an unstoppable force of electric underwater creatures swimming, slowly but steadily, toward the shore where they will flood our cities and force us all to watch "Finding Nemo" from now until the end of time? Fortunately, no (for now). The lights, which were spotted using Visible Infrared Imaging Radiometer Suite on the Suomi NPP satellite, are actually a large collection of fishermen. NASA explains, "There are no human settlements there, nor fires or gas wells. But there are an awful lot of fishing boats." Yep, that's right, those lights that could easily be mistaken for a series of heavily populated islands are actually powerful lights on boats. What exactly are the fishermen looking for? And why are they out blasting their high beams? From NASA: The night fishermen are hunting for Illex argentinus, a species of short-finned squid that forms the second largest squid fishery on the planet. The squid are found tens to hundreds of kilometers offshore from roughly Rio de Janeiro to Tierra del Fuego (22 to 54 degrees South latitude). They live 80 to 600 meters (250 to 2,000 feet) below the surface, feeding on shrimp, crabs, and fish. In turn, Illex are consumed by larger finfish, whales, seals, sea birds, penguins ... and humans. Fishermen use the powerful lights, "generating as much as 300 kilowatts of light per boat," to draw the plankton and fish that the squid eat toward the surface. The squid then follow the food. Alas, it's the last meal for many.

viernes, 29 de marzo de 2013

LA MENTE HOLOGRÁFICA

Is Millionaire Space Tourist Planning Trip to Mars?

Buzz is building about a planned 2018 private mission to Mars, which may launch the first humans toward the Red Planet. A nonprofit organization called the Inspiration Mars Foundation — which is led by millionaire Dennis Tito, the world's first space tourist — will hold a news conference on Feb. 27 to announce the 501-day roundtrip mission, which will aim for a January 2018 launch. "This 'Mission for America' will generate new knowledge, experience and momentum for the next great era of space exploration," Inspiration Mars officials wrote in a media advisory yesterday (Feb. 20). "It is intended to encourage all Americans to believe again, in doing the hard things that make our nation great, while inspiring youth through Science, Technology, Engineering and Mathematics (STEM) education and motivation." Tito made history in 2001, plunking down a reported $20 million for an eight-day trip to the International Space Station aboard a Russian Soyuz spacecraft. [Photos: The First Space Tourists] Tito will participate in the Feb. 27 news conference. So will Taber MacCallum and Jane Poynter, CEO and president, respectively, of Paragon Space Development Corp., which has expertise in life-support systems; and space-medicine expert Jonathan Clark of the Baylor College of Medicine. The speakers' backgrounds and the lofty goals articulated in the media advisory have led some people to speculate that Inspiration Mars is planning a manned mission to the Red Planet. And it looks like that may be the case, according to some media reports. On March 3, Tito will give a talk called "Feasibility Analysis for a Manned Mars Free Return Mission in 2018" at an aerospace conference in Montana, the NewSpace Journal reported today (Feb. 21). The NewSpace Journal says it obtained a copy of the paper Tito plans to present in Montana and gives a summary of its main thrust. Tito's paper discusses "a crewed free-return Mars mission that would fly by Mars, but not go into orbit around the planet or land on it. This 501-day mission would launch in January 2018, using a modified SpaceX Dragon spacecraft launched on a Falcon Heavy rocket," the NewSpace Journal writes. "According to the paper, existing environmental control and life support system (ECLSS) technologies would allow such a spacecraft to support two people for the mission, although in Spartan condition." The mission would be privately financed and cheaper than previous estimates for manned Mars efforts, the NewSpace Journal adds, though no overall cost is given. The purported involvement of California-based SpaceX is not a huge surprise, as company founder Elon Musk has repeatedly stressed his desire to help humanity reach and eventually colonize Mars. Indeed, SpaceX has been developing a mission concept called "Red Dragon," which would use its Dragon capsule to send astronauts to the Red Planet. A 501-day mission would pose potentially serious physiological and psychological issues for astronauts (standard stints aboard the space station are currently just six months). Researchers have tried to understand the psychological effects of being isolated in cramped quarters for long stretches, notably during the Russia-based Mars500 mock mission, which wrapped up in November 2011. But the physiological effects may be tougher to simulate and mitigate, experts say.

El Cielo

El Cielo

canales televisivos de Puerto Rico por internet

Explosion de Una Supernova

Nerd Test

Bienvenidos aquellos que no se conformen en ver en tres dimensiones

Saludos mis amigos(as) ; Colegas y estudiantes

Aqui estara una herramienta para todos donde podremos compartir nuestras ideas opiniones e informacion de una manera honesta y clara para que todos aquellos que acesen este blog puedan utilizarlo para crecimiento y conocimiento.

Las fuentes de informacion de este blog provienen de diferentes areas dentro de la red excepto algunos que son estudios de mi autoria

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una nueva conciencia

una nueva conciencia

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el maestro

el maestro
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