Alien Planet "Full Documentary"

Une nouvelle idée pour détecter les extraterrestres "Le silence éternel de ces espaces infinis m'effraie", écrivait Blaise Pascal face au cosmos. Une manière moderne de réinterpréter cette phrase célèbre consiste à la rapprocher de l'échec qui, jusqu'à présent, a sanctionné toutes les tentatives des astronomes pour découvrir les signes d'une vie extraterrestre. E.T. se tait et son silence obstiné nous fait nous demander, encore et toujours, si nous sommes seuls dans l'Univers. Nous sommes d'autant plus impatients de détecter d'autres civilisations que cette possibilité ne nous a jamais paru aussi proche. Depuis 1995, date de la découverte de la première planète extra-solaire, nous avons mis la main sur des centaines d'autres mondes (763 à la seconde où j'écris ces lignes) et les exobiologistes ne peuvent s'empêcher d'imaginer les meilleures manières de détecter des biomarqueurs sur des exoplanètes.

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Looking for Alien 'Bubbles' in Other Galaxies When I was under the velvet black skies of western Texas a few months ago I had a magnificent view of the star-studded bulge of our galaxy, in the direction of the summer constellation Sagittarius. How many advanced civilizations might be in this hub of the Milky Way? I pondered.

New Solar Technology Generates Electricity and Hydrogen Gas h080/CC BY-SA 2.0 A new solar panel technology includes photovoltaic cells that could generate electricity during the day while at the same time producing hydrogen gas to power a fuel cell at night. The technology that makes this possible is two new types of nanocrystals that replace the traditional organic molecules in a solar panel's construction. The researchers at Bowling Green State University, who developed the nanocrystals, write in JoVE, The Journal of Visualized Experiments that "the nanocrystals are unique for two reasons: they separate charge in different ways due to their architectures, and they are inorganic and durable. The first nanocrystal is rod-shaped, which allows the charge separation needed to produce hydrogen gas, a reaction known as photocatalysis.

Exoplanet Discoveries to Date Are Just a Drop in the Bucket [Interactive] Astronomers have in the past 20 years located several hundred planets orbiting distant stars, and they have only scratched the surface. In a small patch of stars—less than 1 percent of the sky—in the Northern Hemisphere, NASA's Kepler mission has already found more than 100 planets, along with strong hints of thousands more. Stars across the sky ought to be similarly laden with planets. A recent study indicated that each star hosts, on average, 1.6 planets. Exoplanets, as these strange worlds are called, are as plentiful as weeds—they crop up wherever they can.

Iain M. Banks : Le Cycle de la Culture - Et le Space Opera redevint original ! Iain M. Banks : Le Cycle de la CultureEt le Space Opera redevint original !Livre de Poche, Fleuve Noir, Robert Laffont, DLM, Galaxies, romans & nouvelles, traductions (anglais), SF - Space Opera Selon l’adage désormais célèbre, toute œuvre qui se respecte parle de son temps.

Astrosociobiologie Un article de Wikipédia, l'encyclopédie libre. L'astrosociobiologie (parfois appelée exosociologie ou xénosociologie) est une discipline spéculative qui étudie les civilisations extraterrestres supposées et leur possibles caractéristiques sociales. Ce sujet converge avec l'astrobiologie, la sociobiologie et la biologie de l'évolution. Les comparaisons entre la civilisation humaine et les hypothétiques civilisations extraterrestres sont fréquemment posées, plaçant la situation humaine dans le même contexte que les autres intelligences extraterrestres. Super-Earths 'in the billions' 28 March 2012Last updated at 06:17 ET By Jonathan Amos Science correspondent, BBC News, Manchester Liquid water is considered essential if a planet is to support life

How Incomprehensible Could Extraterrestrials Be? A few days ago Paul Gilster, the author of Centauri Dreams: Imagining and Planning Interstellar Exploration and the curator of Centauri Dreams , posted a thoughtful discussion of a blog entry I wrote (titled What's The Connection Between Deafness and SETI? ) His discussion and the resulting comments were fascinating, and in this post I want to carry on that conversation. I want to ask: Will extraterrestrials be so different from us as to be truly incomprehensible? I think the answer is no. And yes.

Life...As We Don't Know It This article originally appeared in ReaClearScience's Newton Blog. You can read the original here. It's amusing and intellectually stimulating to seriously ponder the existence and characteristics of alien life. NASA's Kepler Mission Confirms Its First Planet in Habitable Zone of Sun-like Star Click image for multiple resolutions. This diagram compares our own solar system to Kepler-22, a star system containing the first "habitable zone" planet discovered by NASA's Kepler mission. Image credit: NASA/Ames/JPL-Caltech NASA's Kepler mission has confirmed its first planet in the "habitable zone," the region where liquid water could exist on a planet's surface. Kepler also has discovered more than 1,000 new planet candidates, nearly doubling its previously known count. Ten of these candidates are near-Earth-size and orbit in the habitable zone of their host star.

Tally of confirmed alien planets surpasses 700 Less than 20 years after discovering the first world beyond our solar system, astronomers have bagged alien planet number 700. As of Nov. 18, the tally stands at 702 exoplanets, according to the Extrasolar Planets Encyclopedia, a database compiled by astrobiologist Jean Schneider of the Paris-Meudon Observatory. Schneider's list is one of two main alien-world trackers out there. The other is called "PlanetQuest: New Worlds Atlas," run by NASA's Jet Propulsion Laboratory.

Scientists find 50 new planets and one of them could have alien life By Daily Mail Reporter Updated: 07:20 GMT, 13 September 2011 European astronomers have discovered 50 new planets beyond our solar system, including 16 which are a similar size to Earth. This is the largest number of such planets ever announced at one time.