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Ein Universum aus Nichts

(hpd) Der amerikanische Physiker Lawrence M. Krauss fasst in seinem Buch den derzeitigen Stand der Forschung im Bereich der Kosmologie in leicht verständlicher Form zusammen. Seine Antwort auf die häufig gestellte Frage in der Form wie sie zuerst der Philosoph Gottfried Wilhelm Leibniz gestellt hat „Warum ist überhaupt etwas und nicht vielmehr nichts?” ist fundiert und klar: „das Nichts ist nicht stabil“.

 

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Juli 9, 2013 Posted by | Eigene Artikel | , | Hinterlasse einen Kommentar

In the beginning was the code: Juergen Schmidhuber at TEDxUHasselt

März 16, 2013 Posted by | Videos | | Hinterlasse einen Kommentar

Does the Universe Have a Purpose? feat. Neil deGrasse Tyson

Februar 26, 2013 Posted by | Videos | | Hinterlasse einen Kommentar

“Biological Intelligence is a Fleeting Phase in the Evolution of the Universe”

The species that you and all other living human beings on this planet belong to is Homo sapiens. During a time of dramatic climate change 200,000 years ago,Homo sapiens (modern humans) evolved in Africa. Is the human species entering another evolutionary inflection point?

Paul Davies, a British-born theoretical physicist, cosmologist, astrobiologist and Director of the Beyond Center for Fundamental Concepts in Science and Co-Director of the Cosmology Initiative at Arizona State University, says in his new book The Eerie Silence that any aliens exploring the universe will be AI-empowered machines. Not only are machines better able to endure extended exposure to the conditions of space, but they have the potential to develop intelligence far beyond the capacity of the human brain.

“I think it very likely – in fact inevitable – that biological intelligence is only a transitory phenomenon, a fleeting phase in the evolution of the universe,” Davies writes. “If we ever encounter extraterrestrial intelligence, I believe it is overwhelmingly likely to be post-biological in nature.”

 

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Februar 11, 2013 Posted by | Presse | | Hinterlasse einen Kommentar

Dark Matter –Could It Play a Role in Creating Life in the Universe?

Dark matter makes up the majority of mass in our universe. However, we cannot directly measure the stuff as it doesn’t interact with electromagnetic radiation (i.e. it doesn’t emit or reflect any light), but we can indirectly observe its presence. In the Hubble Space Telescope image above, the distribution of mostly dark matter has been calculated and mapped. Basically, the location and density of anything with mass has been plotted in a 3D representation of the cosmos.

A 2011 study suggests that mysterious, invisible dark matter could warm millions of starless planets in regions such as Abell 1689 (image below) and make them habitable. Scientists think the invisible, as-yet-unidentified dark matter which we know exists because of the gravitational effects it has on galaxies, makes up about 85 percent of all matter in the universe.  Current prime candidates for what dark matter might be are massive particles that only rarely interact with normal matter.

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Januar 3, 2013 Posted by | Presse | | Hinterlasse einen Kommentar

Does the Universe Have a Purpose? feat. Neil deGrasse Tyson

Dezember 3, 2012 Posted by | Videos | | Hinterlasse einen Kommentar

Dr. Lawrence Krauss on the poetry of the universe

September 21, 2012 Posted by | Videos | | Hinterlasse einen Kommentar

Shock and Awe: A Former Christian Ponders the Cosmos

Juni 7, 2012 Posted by | Vorträge | | Hinterlasse einen Kommentar

Is Our Universe a Hologram?

What if our existence is a holographic projection of another, flat version of you living on a two-dimensional “surface” at the edge of this universe? In other words, are we real, or are we quantum interactions on the edges of the universe – and is that just as real anyway?

Whether we actually live in a hologram is being hotly debated,  but it is now becoming clear that looking at phenomena through a holographic lens could be key to solving some of the most perplexing problems in physics, including the physics that reigned before the big bang,what gives particles mass, a theory of quantum gravity.

 

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September 30, 2011 Posted by | Presse | | Hinterlasse einen Kommentar

Are We Living in a Holographic Universe?

What if our existence is a holographic projection of another, flat version of you living on a two-dimensional “surface” at the edge of this universe? In other words, are we real, or are we quantum interactions on the edges of the universe – and is that just as real anyway?

Whether we actually live in a hologram is being hotly debated,  but it is now becoming clear that looking at phenomena through a holographic lens could be key to solving some of the most perplexing problems in physics, including the physics that reigned before the big bang,what gives particles mass, a theory of quantum gravity.

 

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Juli 16, 2011 Posted by | Presse | | Hinterlasse einen Kommentar

The Center of all Things

Mai 21, 2011 Posted by | Videos | | Hinterlasse einen Kommentar

“Will the Mysteries of the Universe Spur a New Religion?” Sagan, Dawkins & Hawking

In his classic on the place of planet earth in the Universe, Pale Blue Dot, Carl Sagan asked how is it that hardly any major religion has looked at science and said: “This is better than we thought. The Universe is much bigger than our prophets said, grander, more subtle, more elegant. Instead they say, ‘No. no. no! My god is a little god, and I want him to stay that way.”

Carl Sagan dreamed of a world where a new religion that stressed the wonder and awe and magnificence of the Universe as revealed by science “might be able to draw forth reserves of reverence and awe hardly tapped by the conventional faiths.”

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Mai 16, 2011 Posted by | Presse | | Hinterlasse einen Kommentar

BBC Wonders of the Universe Episode 1 : Destiny 2011

März 9, 2011 Posted by | Videos | | Hinterlasse einen Kommentar

Dieses bemerkenswerte Ding

Zur Bereicherung und Stützung der Religionen wurden seit Beginn der Menschheitsgeschichte bemerkenswerte Kunstgegenstände, großartige Musik und eindrucksvolle Gebäude geschaffen. Der naturalistische Humanismus gilt dagegen diesbezüglich nicht ganz zu Unrecht als arm. Er wird von vielen als rational und nüchtern angesehen. Seine naturwissenschaftlichen Grundlagen gelten teilweise als schwer verständlich und unanschaulich. Dass dies aber nicht so sein muss, zeigt das folgende Video. Es ist eine Zusammenfassung unserer derzeitigen wissenschaftlichen Kenntnisse über das Universum, einfach erklärt und verpackt in wunderbare Bilder und Animationen. Angesprochene Themen sind: das kopernikanische Prinzip, das anthropische Prinzip, der Beginn des Universums und der Beginn des Lebens.

Der berühmte Physiker und Nobelpreisträger Richard Feynman, einer der Begründer der Quantenfeldtheorie, wird am Ende des Videos mit den folgenden Worten zitiert:

„Unsere Poeten schreiben nicht darüber, unsere Künstler versuchen nicht, dieses bemerkenswerte Ding zu porträtieren. Ich weiß nicht warum. Ist denn niemand inspiriert von unserem gegenwärtigen Bild des Universums? Der Wert der Wissenschaft bleibt unbesungen von Sängern… dies ist noch kein wissenschaftliches Zeitalter.“

Wenn Feynman noch leben würde, wäre er sicher begeistert von dem Video.

Man kann sich die Realität nicht zurechtdenken. Es führt nur ein Weg zur Wahrheit und das ist der mühsame, steinige Weg der Wissenschaften. Lassen wir die naiven Weltbilder der Religionen hinter uns und beginnen wir endlich mit dem wissenschaftlichen Zeitalter. Für die Kunst brauchen wir keine Religion.

Bernd Vowinkel

Januar 17, 2011 Posted by | Eigene Artikel | | Hinterlasse einen Kommentar

Is Intelligent Life in the Universe the Equivalent of Cosmic DNA?

Several leading physicists and cosmologists, Lee Smolin and James Gardner, author of The Intelligent Universe, believe that Darwinian principles define the nature of any universe such that new infant universes produced by a black holes will resemble their parent universe, and have a system of physical laws and constraints that enables life and intelligence to emerge and eventually repeat the cycle.

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Juli 26, 2010 Posted by | Presse | | Hinterlasse einen Kommentar

Through The Wormhole: Is there A Creator?

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Juli 19, 2010 Posted by | Videos | , , | Hinterlasse einen Kommentar

Carl Sagan: A Universe Not Made For Us

Juli 16, 2010 Posted by | Videos | | Hinterlasse einen Kommentar

Was the Universe Created by a Cyclical Trillion-Year Collision?

String theorists Neil Turok of Cambridge University and Paul Steinhardt, Albert Einstein Professor in Science and Director of the Princeton Center for Theoretical Science at Princeton believe that the cosmos we see as the Big Bang was actually created by the cyclical trillion-year collision of two universes (which they define as three-dimensional branes plus time) that were attracted toward each other by the leaking of gravity out of one of the universes.

In their view of the universe the complexities of an inflating universe after a Big Bang are replaced by a universe that was already large. flat, and uniform with dark energy as the effect of the other universe constantly leaking gravity into our own and driving its acceleration.

According to this theory, the Big Bang was not the beginning of time but the bridge to a past filled with endlessly repeating cycles of evolution, each accompanied by the creation of new matter and the formation of new galaxies, stars, and planets.

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Juni 23, 2010 Posted by | Presse | | Hinterlasse einen Kommentar

A New Look at the Universe: Dark Epoch Followed the Big Bang

USC College’s Elena Pierpaoli and 200 other physicists are trying to find out what went on during the dark epoch after the Big Bang for the next 380,000 years as photons and particles clung to each other in a high-energy dance that kept any light from escaping. They are using the Planck mission launched last year by the European Space Agency— the most advanced space-based telescope designed to study the early universe by mapping the weak background radiation pervading the universe with far greater accuracy than two previous missions.

“The [cosmic background radiation] is a gold mine to test various theories regarding the early universe,” Pierpaoli said. “It’s a section of the history of the cosmos that we don’t know much about and it’s incredibly important.”

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Juni 14, 2010 Posted by | Presse | | Hinterlasse einen Kommentar

The Grand Scale of the Universe

Mai 27, 2010 Posted by | Videos | | Hinterlasse einen Kommentar

Is Our Observable Universe Part of a Larger Universe? New Theory Suggests “Yes”

The Noble-prize winning physicist Enrico Fermi used to criticize his colleagues work not because it was crazy, “but because it was not crazy enough!” Long before Fermi, Giordano Bruno was burned at the stake in Rome for saying that we lived in a universe of infinite stars and planets.

So we feel safe and sensible asking a perfectly 21st-Century question: could our universe be located within the interior of a wormhole which itself is part of a black hole that lies within a much larger universe?

Such a scenario in which the universe is born from inside a wormhole (also called an Einstein-Rosen Bridge) is suggested in a paper from Indiana University theoretical physicist Nikodem Poplawski.Einstein-Rosen bridges have never been observed in nature, but they provide theoretical physicists and cosmologists with solutions in general relativity by combining models of black holes and white holes.

Poplawski takes advantage of the Euclidean-based coordinate system called isotropic coordinates to describe the gravitational field of a black hole and to model the radial geodesic motion of a massive particle into a black hole.

“This condition would be satisfied if our universe were the interior of a black hole existing in a bigger universe,” he said. “Because Einstein’s general theory of relativity does not choose a time orientation, if a black hole can form from the gravitational collapse of matter through an event horizon in the future then the reverse process is also possible. Such a process would describe an exploding white hole: matter emerging from an event horizon in the past, like the expanding universe.”

A white hole is connected to a black hole by an Einstein-Rosen bridge (wormhole) and is hypothetically the time reversal of a black hole. Poplawski’s paper suggests that all astrophysical black holes, not just Schwarzschild and Einstein-Rosen black holes, may have Einstein-Rosen bridges, each with a new universe inside that formed simultaneously with the black hole.

“From that it follows that our universe could have itself formed from inside a black hole existing inside another universe,” he said.

By continuing to study the gravitational collapse of a sphere of dust in isotropic coordinates, and by applying the current research to other types of black holes, views where the universe is born from the interior of an Einstein-Rosen black hole could avoid problems seen by scientists with the Big Bang theory and the black hole information loss problem which claims all information about matter is lost as it goes over the event horizon -in turn defying the laws of quantum physics.

Casey Kazan via materials provided by Indiana University

Quelle

April 7, 2010 Posted by | Presse | | Hinterlasse einen Kommentar

Die Schönheit des Universums

Musik: Daniel Cioccoloni – Meditation for Chamber Quartet, No.2

März 5, 2010 Posted by | Videos | | 1 Kommentar

Did Dark Matter Destroy Universe 1.0?

No galaxies have been seen before at such early epochs as that seen in this deepest images of the universe ever taken in near-infrared light by NASA’s Hubble Space Telescope (see video below). The faintest and reddest objects in the image are galaxies that correspond to “look-back times” of approximately 12.9 billion years to 13.1 billion years ago.

A longstanding enigma is that it still appears that these early galaxies did not emit enough radiation to “reionise” the early Universe by stripping electrons from the neutral hydrogen that cooled after the Big Bang. This “reionisation” event occurred between about 400 million and 900 million years after the Big Bang, but astronomers still don’t know which light sources caused it to happen. These newly discovered galaxies date from this important epoch in the evolution of the Universe.

It took about the first billion years to completely ionize the Universe; before that, the Universe was opaque to light, with neutral atoms acting like dust. As the Universe reionizes, it becomes easier to see the light from whatever objects are behind it. The youngest object ever discovered in the universe, Gamma Ray Burst GRB 090423, born when the Universe was under 0.7 billion years old. This thing is so far away that no visible light actually got out; we can only see the X-rays from it

These early Hubble galaxies are much smaller than the Milky Way and other spiral galaxies and have populations of stars that are intrinsically very blue. This may indicate the galaxies are so primordial that they are deficient in heavier elements, and as a result, are quite free of the dust that reddens light through scattering.

Ross McLure of the Institute for Astronomy at Edinburgh University and his team detected 29 galaxy candidates, of which twelve lie beyond redshift 6.3 and four lie beyond redshift 7 (where the redshifts correspond to 890 million years and 780 million years after the Big Bang respectively). He notes that “the unique infrared sensitivity of Wide Field Camera 3 means that these are the best images yet for providing detailed information about the first galaxies as they formed in the early Universe”.

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Februar 8, 2010 Posted by | Presse | , | Hinterlasse einen Kommentar

Richard Dawkins on our “queer” universe

Oktober 21, 2009 Posted by | Videos | , | Hinterlasse einen Kommentar

   

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