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Universe & Multiverse

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Sixty Symbols - Physics and Astronomy videos. Today's Moon Phase. Lunacy and the Full Moon. “It is the very error of the moon.

Lunacy and the Full Moon

She comes more near the earth than she was wont. And makes men mad.” —William Shakespeare, Othello. 11 Spectacular Facts About the Moon. The Moon is Earth’s closest satellite in our solar system, but in many ways, we hardly know our neighbor.

11 Spectacular Facts About the Moon

Scientists aren’t entirely sure how it formed, and other facts, like its shape (more egg-like than spherical), and the consistency of its surface (dusty but firm), were confirmed only recently. With the 50th anniversary of the Apollo 11 Moon landing this year, and NASA preparing to return to the lunar surface for the first time in decades, it’s time to brush up on these facts about the Moon—from colorful names for full moons to the first landing on the dark side of the Moon. 1. The Moon may have formed when a giant object in the solar system hit Earth. Day and Night World Map. +1 this page: Follow us on Google+: Like/share this page: Follow us on facebook:

Day and Night World Map

What Would Happen if the Earth Stopped Spinning? Want to stay on top of all the space news?

What Would Happen if the Earth Stopped Spinning?

Follow @universetoday on Twitter. How Fast Does the Earth Rotate? Want to stay on top of all the space news?

How Fast Does the Earth Rotate?

Follow @universetoday on Twitter This article originally appeared in 2009, but I’ve updated it and added this video. The ground feels firm and solid beneath your feet. SunAeon Solar System Simulator. The Planets Today : A live view of the solar system. The Observable Universe. If the Moon Were Only 1 Pixel - A tediously accurate map of the solar system.

Mercury Venus Earth You Are Here Moon Mars Jupiter.

If the Moon Were Only 1 Pixel - A tediously accurate map of the solar system

WorldWide Telescope. Stellarium. Planétarium - Carte des étoiles interactive et ciel virtuel. Astroplanetes, portail d 'astronomie. Online Sky Map - Stelvision Astronomy. Your Sky. By John Walker Welcome to Your Sky, the interactive planetarium of the Web.

Your Sky

Astronomy Software. Galaxy Zoo. PROGRAMY. Visions of the Future. Imagination is our window into the future.

Visions of the Future

At NASA/JPL we strive to be bold in advancing the edge of possibility so that someday, with the help of new generations of innovators and explorers, these visions of the future can become a reality. As you look through these images of imaginative travel destinations, remember that you can be an architect of the future. Click on any of the thumbnails below to learn more and download a free poster sized image. The Kessler Syndrome Explained. The Kessler Syndrome: 10 Interesting and Disturbing Facts Low Earth Orbit, an area of outer space around Earth that encloses all orbits below 2000 km, is the home of the International Space Station and of other thousands of satellites.

The Kessler Syndrome Explained

It is also becoming a hazardous arena littered with mindless space junk and inoperable spacecraft orbiting at outrageous speeds. Astronomy. Sciences. Astronomy. Universe. The Scale of the Universe 2. Timeline of the Universe. Univ. - beginning. Photopic Sky Survey. Magnifying the Universe. Embed this infographic on your site!

Magnifying the Universe

<iframe width="500" height="323" scrolling="no" src=" frameborder="0" allowfullscreen></iframe><br />Copyright 2012. <a href=" the Universe</a> by <a href=" Sleuth</a>. Chromoscope. Zooniverse. L'Univers avant le Big Bang.

Le Big Bang est-il le commencement du temps, ou l’Univers existait-il avant ? Il y a moins de dix ans, une telle question aurait eu des allures de sacrilège. Pour les cosmologistes, une telle interrogation n’avait tout simplement pas de sens. Imaginer une époque antérieure au Big Bang, c’était comme chercher un point au Nord du pôle Nord. Selon la théorie de la relativité générale, un Univers en expansion doit avoir commencé par un Big Bang, ce qui implique la finitude du temps, apparu simultanément avec l’espace et l’énergie-matière.

Cette façon de voir s’est modifiée au cours des dernières années. This is the Most Detailed Map of the Universe to Date. Universe has 2 trillion galaxies, astronomers say. There are a dizzying two trillion galaxies in the universe, up to 20 times more than previously thought, astronomers reported on Thursday. The surprising finding, based on 3D modeling of images collected over 20 years by the Hubble Space Telescope, was published in the Astronomical Journal. Scientists have puzzled over how many galaxies the cosmos harbors at least since US astronomer Edwin Hubble showed in 1924 that Andromeda, a neighboring galaxy, was not part of our own Milky Way. But even in the era of modern astronomy, getting an accurate tally has proven difficult.

Un trou noir supermassif libère des explosions de gaz dans une galaxie voisine. Deux émissions massives de gaz provenant d'un trou noir ont été enregistrées par le télescope spatial Chandra. Selon les astronomes, ce phénomène s’apparente à une sorte de "rot" après que le trou noir se soit nourri d’étoiles. Les astronomes ont identifié deux émissions massives de gaz provenant d'un trou noir supermassif situé dans le centre d'une galaxie voisine.

Physicists Believe They've Discovered a Fifth Fundamental Force of the Universe. Although physics may seem complicated to the uninitiated (or even to the trained professional, for that matter), it’s worth remembering that physics deals with only four known forces: gravity (which keeps us from floating off the Earth); electromagnetism (which binds electrons to atoms, and atoms to each other); and two forces that operate over very short distances—the strong nuclear force (which binds atomic nuclei together) and the weak nuclear force (which governs certain kinds of radioactive decay). But if recent experimental work in particle physics pans out, we may have to get used to the idea of a fifth force. The research outlining the evidence for this fifth force was published last week in the journal Physical Review Letters. If the discovery holds up, it will radically shake up what we know about the workings of the universe. The Edge Of The Universe Is Closer Than Scientists Previously Thought.

The visible universe just shrunk by 320 million light-years in all directions, updating a famous calculation that physicists first made 13 years ago. If you're trying to calculate the size of the cosmos, the speed of light — the fastest anything can go — is a tempting place to begin and end. You'd reason that since the Big Bang happened some 13.8 billion years ago, there's a 13.8-billion-light-year radius marking the edge of what mere mortals could see.

Not so. As physicists have shown again and again over the past century, space is expanding faster and faster. There's also a blinding glow of light that didn't clear up until about 378,000 years after the Big Bang — an event called recombination (when particles finally cooled down enough to form the first atoms). If you take expansion, recombination, and other variables into account, as physicist J. A Guide to Different Kinds of Parallel Universes « NOVA's Physics Blog: The Nature of Reality. These days it often seems that if a theory has loose ends, its dangling threads are surreptitiously tied together out of view within the hidden fabric of a parallel universe. While some researchers recoil from introducing unseen aspects to a theory, others find that the invisible knots create an irresistibly pretty package. Depending on one’s taste, there are so many types of parallel universes to choose from—alternative cosmos galore.

New quantum mechanics theory says parallel universes exist, interact. Hubble identifie des étoiles "monstrueuses" 30 millions de fois plus brillantes que le Soleil. En utilisant le télescope spatial Hubble, des astronomes ont réussi à identifier neuf étoiles inconnues. Réunis dans un seul amas, ces astres sont de vrais mastodontes qui brilleraient ensemble 30 millions de fois plus que le Soleil. Avec ses 1,3 million de kilomètres de diamètre, le Soleil peut paraitre très impressionnant. The Milky Way's Monster, Unveiled. 2 Futures Can Explain Time's Mysterious Past. A detailed view of Betelgeuse on a collision course with a nearby wall of dust.

One physical phenomenon that orders our entire universe. L'Univers pourrait avoir un "bouton de suppression", remettant en cause la physique telle que nous la connaissons. Des physiciens ont suggéré le fait que l’Univers pourrait avoir un mécanisme « d’autodestruction », de sorte que tout ce qui existe pourrait disparaître à jamais et à tout moment, sans aucun élément précurseur. Un sujet portant à réflexion. Comme nous pouvons le voir dans la vidéo proposée par Kurzgesagt – In a Nutshell (vidéo en anglais, lien en fin d’article) : si ce bouton d’autodestruction se révèle être réel, cela signifie que nous pourrions être totalement réduits à néant, en moins d’une seconde.

Afin de comprendre ce scénario terrifiant, il faut d’abord passer par deux des principes fondamentaux de l’Univers. Le premier est le niveau d’énergie : fondamentalement, tout ce qui existe, possède un niveau d’énergie. Le bois par exemple, a un niveau d’énergie relativement élevé, lui permettant d’être brûlé pour libérer une certaine quantité d’énergie thermique. Mais les mauvaises nouvelles ne s’arrêtent pas là ! Starts With A Bang! SIMBAD Astronomical Database.

What is SIMBAD, and what is it not ? % Your Sky. 100,000 Stars. Simulation 3D. The (Zoomable) Milky Way. Is our Milky Way galaxy a zombie, already dead and we don't know it? Kevin Schawinski, Swiss Federal Institute of Technology Zurich Like a zombie, the Milky Way galaxy may already be dead but it still keeps going.

Our galactic neighbor Andromeda almost certainly expired a few billion years ago, but only recently started showing outward signs of its demise. Multiverse. Multiverse. Multiverse. Quantum physics. Quantique. Quelques éléments de physique et de philosophie des multivers. Quelques éléments de physique et de philosophie des multiversPar Aurélien BarrauEssai publié en libre-accès 130 pages Présentation par Jean-Paul Baquiast 06/10/2007 The « Flat-Earth Wood-Cut » 1) Nous avons découvert Aurélien Barrau à l’occasion de son entretien avec Stéphane Deligeorges, sur France Culture, Continent Sciences, le 24 octobre 2007.

Dans cet entretien, en grande partie consacré à l’hypothèse des multivers ou plurivers, il présentait une démarche remarquable, entre science et philosophie. Par cette démarche, pour reprendre une de ses expressions, il » essaie de créer une porosité entre l’espace scientifique et le monde mythique, de penser la plurivocité intrinsèque du réel, sans pour autant rien renier de la rigueur physico-mathématique et sans recourir aux métaphores élégantes mais inexactes ». The Cosmic Accident of Life: Alan Lightman on Dark Energy, the Multiverse, and Why We Exist. Une belle représentation du multivers... - Trust My Science. Why the multiverse is all about you - The Philosopher's Zone. In general, quantum physicists don't have much truck with big conceptual schemes. UNIVERS PARALLELES, MULTIVERS - Pearltrees voisins (sources) Parallel Universes: Theories & Evidence.

Livres/ UNIVERS PARALLELES, MULTIVERS (sources) Exploring Parallel Universes. Parallel Worlds Probably Exist. Here’s Why. SCIENCES QUANTIQUES (médias) Holographic Universe. Images. Software. Astronomical Paradigms. Fine-tuned universe. The Universe. 'Gaian Bottleneck Theory' Explains Why We Haven't Found Any Aliens. The aliens are silent because they're dead. The Absurdity of Infinity: Astrophysicist Janna Levin Explains Whether the Universe Is Infinite or Finite in Letters to Her Mother – Brain Pickings.

Imagining the Tenth Dimension: September 2011. Geometry of the Universe. It Does Something A Lot Weirder. Magnetars: Most powerful magnets in the universe. Memories of Kurt Gödel. Leaves something to be desired. 10 Strange Things About The Universe. 10 Mind-Bending Implications of the Many Worlds Theory. Il Multiverso e la Tempesta di Shakespeare. The 3 ways that parallel Universes could be real – Starts With A Bang! – Medium. Carl Sagan: Fourth dimension explanation.

The Sagan Series. Voyager - The Interstellar Mission. Universe. Espace. L'espace. Astronomy. Astronomy. Astronomy/Physics. The Daily Galaxy - Science, Space, Tech.