How can you create a universe from nothing? Well if you calculate the total matter of the universe it is positive. If you calculate the total energy of the universe it is negative because of gravity. Gravity has negative energy. When you add the two together what do you get? Zero, so it takes no energy to create a universe. Universes are for free. A universe is a free lunch.
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The idea that our Universe is a giant cosmic computer pervades modern science. Now one physicists says this assumption is dangerously wrong
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Why should you bother to wake up tomorrow knowing that we're all going to die billions and billions of years from now when the universe turns to absolute zero, when the stars blink out, when we have nothing but neutron stars and black holes? Dr. Kaku says that billions of years from now we may be able to move to a different universe.
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Welcome back to yet another installment of the question of whether we’re all just products of an advanced simulation that created an entire universe, but this time, instead of plunging deep into the lore of the Matrix with Moore’s Law hijinks and philosophy, we’ll be hunting for physical proof that the universe is actually a simulation in the realm of quantum chromodynamics
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How many dimensions are there? In the latest online poll of our Science fiction, science fact project you told us that you'd like an answer to this question. So we asked theoretical physicist David Berman to find out more. We also bring you a range of other Plus articles exploring the question, as well as two articles from FQXi who are our partners on this project. Happy reading!
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![[VIDEO] What Put the Bang in the Big Bang? | Dr. Kaku's Universe | Science News | Scoop.it](https://img.scoop.it/MkeAEfB0JrUfXAPzXO3vbzl72eJkfbmt4t8yenImKBVvK0kTmF0xjctABnaLJIm9)
Today, Dr. Kaku addresses the question of what comes next after the discovery of the Higgs Boson?
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The start of the Universe should be modeled not as a Big Bang but more like water freezing into ice, according to a team of theoretical physicists.
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Time might feel like it is running away from us as the pace of life increases but according to scientists, the future will stop completely. More about TIME: http://www.scoop.it/t/science-news?tag=time Full Article: http://goo.gl/14IE7 Via Jessica Call
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From
phys
The universe is a marvelously complex place, filled with galaxies and larger-scale structures that have evolved over its 13.7-billion-year history. Those began as small perturbations of matter that grew over time, like ripples in a pond, as the universe expanded. By observing the large-scale cosmic wrinkles now, we can learn about the initial conditions of the universe. But is now really the best time to look, or would we get better information billions of years into the future - or the past?
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Stem-cell guru Robert Lanza presents a radical new view of the universe and everything in it. Articles about COSMOLOGY: http://www.scoop.it/t/science-news?tag=cosmology
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The distribution of matter across the cosmos is most easily explained by inflation, a theory that suggests our universe inflated rapidly — just like a balloon — shortly after its birth, according to new research.
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The notion of multiple universes is one that cosmologists like to theorize about but generally don’t relish proving, mainly because doing so would be very difficult. But a team of researchers that showed a few years ago how matter might travel between our universe and others now think they ought to be able to observe this phenomenon in action using existing technology, lending credence to the multiverse theory. All they need is a neutron bottle, some neutrons, and a year.
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This article is based on a lecture given by Martin Rees at Stephen Hawking's 70th birthday symposium. It is published here by permission.
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Following the Big Bang, the universe consisted only of nonmagnetic elements and particles. Now, a new mechanism has been discovered for the magnetisation of the universe even before the emergence of the first stars.
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Our universe may exist inside a black hole. This may sound strange, but it could actually be the best explanation of how the universe began, and what we observe today. It’s a theory that has been explored over the past few decades by a small group of physicists including myself.
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Solving the mysteries of the universe is usually about finding the best answer to a question.
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Combine topology with symmetry and add a sprinkling of quantum mechanics. The result? A powerful new theory of everything
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If time didn’t exist before the Big Bang, how could anything happen before it? Our concept of ‘before and after’ (as we know it) relies on our understanding of time and the concept of ’cause and effect’. An analogous question would be “What’s north of the north pole?”. The question has no meaningful answer due to our understanding and definition of ‘north’. This puts the question in a strictly theoretical realm. We’re going to explore several different hypotheses on what happened before the Big Bang, put forth by a few of the world’s leading theoretical physicists.
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From
io9
In 2018, the James Webb Space Telescope will become one of the greatest tools in humanity's quest to understand the cosmos.
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Volume-rendering of the gas distribution taken from a cosmological simulation done with the new moving mesh code AREPO
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To make things clear - Maldacena's universe is not like the one we actually live in! It's a model, a toy universe, which comes complete with its own physics. It's a hologram because all the physical goings-on inside it can be described by a physical theory that's only defined on the boundary. What's more, it's a universe in which the gravity/quantum conundrum has been resolved completely: the boundary theory is purely quantum, it contains no gravity, but a being living in the interior will still experience gravity. Gravity in this universe is part of the holographic illusion. More on COSMOLOGY: http://www.scoop.it/t/science-news?tag=cosmology Via Dr. Stefan Gruenwald, Pradeep Kr. Banerjee
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From
phys
Our universe may exist inside a black hole. This may sound strange, but it could actually be the best explanation of how the universe began, and what we observe today. More on BLACK HOLES: http://www.scoop.it/t/science-news?tag=Black%20Hole
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Cosmologists use the mathematical properties of eternity to show that although universe may last forever, it must have had a beginning... Articles about MATHEMATICS: http://www.scoop.it/t/science-news?tag=mathematics
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"It took less than an hour to make the atoms, a few hundred million years to make the stars and planets, but five billion years to make man!" -George Gamow Let's pretend that, for all of our history on Earth,...
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This article is based on a lecture given by Martin Rees at Stephen Hawking's 70th birthday symposium. It is published here by permission. It's the second part of the article.
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