La Nasa a trouvé de l’eau sur Mars, mais elle n’a pas le droit d’y toucher. L’annonce fracassante de l’agence spatiale se heurte aux lois du Traité de l’espace. Ce lundi 28 septembre, l’agence spatiale américaine annonçait au monde entier, après plusieurs jours de teasing, que l’eau liquide existe bien sur Mars, ou du moins des minéraux hydratés pendant une partie de l’année martienne. Dans les minutes qui ont suivi cette conférence, certains astronomes se sont empressés de fantasmer sur ce que cela change pour les futurs voyages de l’homme sur la planète rouge.
Mais comme le signale le site Quartz, si la présence d’eau est bien confirmée sur place, l’homme ne pourra pas s’en approcher: «Les puissances mondiales dans l’espace doivent respecter les règles édictées par le Traité de l’espace de 1967 qui interdit a quiconque d’envoyer une mission, humaine ou non, près d’une source d’eau pour ne pas la contaminer avec de la vie venant de la Terre.»
Et effectivement, l’article IX laisse peu de place à l’interprétation: Un risque difficile à mesurer Partagez cet article. How NASA might build its very first warp drive. I want to see this work as much as anyone else on io9, but every time I read an article on warp drive, I expend so much mental energy trying to wrap my head around the concept that my entire left hand side goes numb.
Somewhere along the line my understanding of concepts such as the nature of Spacetime is deficient. Here's the problem. When I think about the idea of expanding the conceptual framework that describes the continuum between two abstract concepts, behind a spaceship, whilst contracting the conceptual framework that describes the continuum between two abstract concepts, in front of a spaceship; all I can think of is that this like saying that when in conversation with another person, I can reach out with my hand, grasp hold of the words that are coming out of that other persons mouth and fold them in half. If someone could point me towards some legible books that I could buy that would help me understand where my understanding has gone wrong, I would be grateful.
Thanks. What Would Happen To Your Body In Space Without A Spacesuit? Have you ever wondered what might happen to your body in space without a spacesuit? Is it really as dramatic as the movies make it out to be? Would you literally EXPLODE? Could you survive? On Earth, we live a pretty cozy existence thanks to our protective atmosphere. It shields us from the Sun’s harmful UV rays, regulates temperatures and also maintains a nice atmospheric pressure. The vacuum of space, however, is much more hostile. Without this lovely thick atmospheric blanket, you’re exposed to all sorts of things. The most serious dangers of exposure to outer space are a lack of oxygen and ebullism.
As mentioned, the other serious danger is a lack of oxygen. After losing consciousness, you’ll probably last a couple of minutes maximum before you die. In sum- you’d swell up, burn, mutate, pass out and your lungs might explode. [Header image, "Helmet View from Astronaut Mike Fossum," from NASA Goddard Space Flight Center, via Flickr. MIT Students Claim Astronauts Will Starve On 'Mars One' Mission. Astronomers Discover Planet Identical To Earth With Orbital Space Mirror. WASHINGTON—In what many are hailing as the most significant development in the history of space exploration, NASA scientists announced Thursday that a planet seemingly identical to Earth has been discovered by the agency’s Orbital Space Mirror.
According to NASA, the $2.9 billion aluminum glass mirror, which stretches over 180 feet wide and 147 feet tall, has already produced invaluable data suggesting that our solar system may contain a terrestrial planet of the exact same size, shape, and surface composition as Earth. “This is a historic moment for humankind to confirm the existence of another planet that is almost indistinguishable from our own,” said mission leader Allen Brugel, who explained that after releasing the Orbital Mirror from a Delta IV heavy rocket at an operational altitude of 104,000 miles, the team received almost instantaneous images of an Earth-like planet approximately 208,000 miles away. L'espace, c'est dangereux et les programmes spatiaux doivent avoir la culture du risque. Deux engins ont explosé fin octobre, une fusée Antares et le SpaceShipTwo de Virgin Galatic. Mais ce qui devrait nous étonner, c'est le phénomène auquel nous sommes désormais habitués: une fusée qui n'explose pas et qui, stable et droite comme un i, quitte l'atmosphère.
Deux engins spatiaux se sont écrasés à quelques jours d'intervalle. Le premier, une fusée, transportait une capsule de ravitaillement pour l'ISS. L'autre accident est survenu lors d'un vol d'essai d'une navette spatiale dédiée au tourisme suborbital. Il faudra du temps avant de connaître les causes de ces deux accidents, mais rien n'indique qu'ils aient quoi que ce soit en commun, si ce n'est un hasard du calendrier. «Vu qu'[une redondance] s'ajoute souvent après la découverte des problèmes, cela crée trop fréquemment des interactions inattendues entre des parties éloignées du système que les concepteurs auraient pu difficilement prévoir.»
Mais ne vous méprenez pas: rien n'est simple dans un vol spatial. Self-replicating spacecraft. The idea of self-replicating spacecraft has been applied — in theory — to several distinct "tasks". The particular variant of this idea applied to the idea of space exploration is known as a von Neumann probe. Other variants include the Berserker and an automated terraforming seeder ship. Theory[edit] In theory, a self-replicating spacecraft could be sent to a neighbouring star-system, where it would seek out raw materials (extracted from asteroids, moons, gas giants, etc.) to create replicas of itself. These replicas would then be sent out to other star systems.
Given this pattern, and its similarity to the reproduction patterns of bacteria, it has been pointed out that von Neumann machines might be considered a form of life. The first quantitative engineering analysis of such a spacecraft was published in 1980 by Robert Freitas,[1] in which the non-replicating Project Daedalus design was modified to include all subsystems necessary for self-replication. It has been theorized[by whom?]
Nasa validates 'impossible' space drive. Nasa is a major player in space science, so when a team from the agency this week presents evidence that "impossible" microwave thrusters seem to work, something strange is definitely going on. Either the results are completely wrong, or Nasa has confirmed a major breakthrough in space propulsion.
British scientist Roger Shawyer has been trying to interest people in his EmDrive for some years through his company SPR Ltd. Shawyer claims the EmDrive converts electric power into thrust, without the need for any propellant by bouncing microwaves around in a closed container. He has built a number of demonstration systems, but critics reject his relativity-based theory and insist that, according to the law of conservation of momentum, it cannot work. According to good scientific practice, an independent third party needed to replicate Shawyer's results. However, a US scientist, Guido Fetta, has built his own propellant-less microwave thruster, and managed to persuade Nasa to test it out. What would Earth's skies look like with Saturn's rings? Posted By Jason Davis Topics: pretty pictures, art Illustrator and author Ron Miller specializes in, among other things, incredible visualizations of other worlds.
He has rendered the surface of Titan, peered into black holes for Discover magazine, and designed a Pluto stamp that is currently hurtling toward the far reaches of our solar system aboard the New Horizons spacecraft. Now, Miller brings his visualizations back to Earth for a series exploring what our skies would look like with Saturn’s majestic rings. We'll start with Washington, D.C. and work our way southward.
Ron Miller Rings over Washington D.C. From Washington, D.C., the rings would only fill a portion of the sky, but appear striking nonetheless. Rings from Guatemala From Guatemala, only 14 degrees above the equator, the rings would begin to stretch across the horizon. Saturn's rings from Earth's equator From Earth's equator, Saturn's rings would be viewed edge-on, appearing as a thin, bright line bisecting the sky. Facebook! Comment les programmes spatiaux choisissent-ils les animaux qu’ils envoient dans l’espace? - Sam après son vol sur Little Joe-2 (LJ-2) en décembre 1959 / NASA - L'Iran a déclaré lundi avoir envoyé un singe dans l’espace.
Le pays avait déjà envoyé de plus petits organismes dans la frontière finale, dont un rat, des vers et deux tortues. Quelles sont les caractéristiques recherchées par les programmes spatiaux quand ils choisissent des animaux? Une taille et un poids raisonnable, une expérience des laboratoires et une capacité à rester calme sous la pression. Depuis plus de 60 ans, les programmes spatiaux ont envoyé des animaux dans l’espace pour la même raison que les mineurs descendaient au font de la mine avec des canaris: pour se prémunir eux-mêmes du danger (les canaris en cage, s’ils montraient des signes d’agitation ou de suffocation avertissaient les mineurs d’un risque d’asphyxie par le gaz, NdT). publicité Pour choisir les espèces, les scientifiques ont longtemps suivi un schéma simple.
Malheureusement, bon nombre de primates périrent pour la science. Forrest Wickman. LIVE REAL TIME SATELLITE TRACKING AND PREDICTIONS. 7 Horrible Ways The Universe Can Destroy Us Without Warning. You know what the universe is? A total dick, that's what. You know what else it is? A giant microwave oven. If you tune your TV set between channels, part of the "snow" that you see on the screen is background noise caused by cosmic radiation.
You can also hear this phenomenon as a low, humming hiss behind all other noise. Via Wiki CommonsThis is called a horn antenna. How It Will Get Us: While cosmic rays aren't able to deliver microwaves powerful enough to do what an actual microwave oven does (i.e., explode us like hot dogs), other kinds of rays out there are more than capable of harming our machinery and turning us into walking tumor farms. GettyHey, is it cool to start spraying CFCs again? OK! GettySo at least you know one thing is getting cooked up there.
And what about the cosmic microwave background? Getty"Damn you, space. While cosmic rays can be harmful and even fatal, they're stopped just short of eradicating all life on Earth by our built-in defense system. Just once a day. Here's NASA's New Design for a Warp Drive Ship. Wha!? I thought the Alcoubierre drive was unfeasible due to insanely large energy requirements. Must. Watch. Entire. Video. It was in the initial proposal by Alcubierre himself in 96. White has focused a lot of time on bringing the energy costs down. The thing I find interesting is this: I was thinking the ratio of ring to ship would be greater. Everything about this excites me, though. And then in 2012 or so further calculations found the required mass to be equivalent of the Voyager 2 probe, which is when the world suddenly started to give a shit and NASA began actual literal feasibility studies into the existence of warp bubbles.
You and I should be friends. Now, I would think the release of this image is the first part of serious research on NASA's part into the feasibility of this project? They started doing some experiments with lasers but I haven't heard anything about results. Espace. Les glorieuses fusées russes se font attendre.