I recently finished reading Max Tegmark’s latest book, ‘Our Mathematical Universe‘, about his views on multiverses and the ultimate nature of reality. This is the second in a series of posts on the concepts and views he covers in the book. Tegmark postulates four levels of multiverse. In the first post of this series, I described Termark's Level I … Continue reading Tegmark’s Level II Multiverse: bubble universes
Tag: Universe
Tegmark’s Level I Multiverse: infinite space
I've just finished reading Max Tegmark's latest book, 'Our Mathematical Universe', about his views on multiverses and the ultimate nature of reality. This is the first in a series of posts that I plan to do on it. Tegmark postulates four levels of multiverse. This post is about the first, and simplest version, the Level I … Continue reading Tegmark’s Level I Multiverse: infinite space
xkcd: Cosmologist on a Tire Swing
A few years ago the "it's senseless to ask what came before the big bang because there was no before" meme was hot. I remember Stephen Hawking saying it in his documentary a year or two ago. There now seems to be a good amount of push-back from the rest of the cosmology community to this certitude. … Continue reading xkcd: Cosmologist on a Tire Swing
How a Medieval Philosopher Dreamed Up the ‘Multiverse’ | Space.com
The idea that our universe may be just one among many out there has intrigued modern cosmologists for some time. But it looks like this "multiverse" concept might actually have appeared, albeit unintentionally, back in the Middle Ages. When scientists analyzed a 13th-century Latin text and applied modern mathematics to it, they found hints that … Continue reading How a Medieval Philosopher Dreamed Up the ‘Multiverse’ | Space.com
First Direct Evidence of Cosmic Inflation – SpaceRef
Wow! There were lots of rumors about this over the weekend. Turns out that, in this case, the rumors were spot on. Almost 14 billion years ago, the universe we inhabit burst into existence in an extraordinary event that initiated the Big Bang. In the first fleeting fraction of a second, the universe expanded exponentially, … Continue reading First Direct Evidence of Cosmic Inflation – SpaceRef
SMBC: Sperm cosmology
All kinds of ways to interpret this one. (Click through to see full sized version.) via Saturday Morning Breakfast Cereal.
You say multiverse, I say galaxies
Corey Powell has an interesting post up on what he calls the Four Great Eras of Exploration. The first era was Galileo's discovery of the vastness of the universe, the second that stars were composed of chemical elements, and the third was Hubble's discovery of other galaxies. The fourth, and main topic of his post, … Continue reading You say multiverse, I say galaxies
Where is the Earth located?
http://www.youtube.com/watch?v=8_l8CxIieVQ I enjoyed this video, but I wonder about Fraser's statement that cosmologists think if you travel in one direction long enough you'll eventually end up back where you are. That is one model, but not the only one. It depends on space being curved, and tests currently show it to be flat. Of course, … Continue reading Where is the Earth located?
The physics of the multiverse
Fellow blogger agrudzinsky shared this video in a comment, but I thought it was good enough to warrant a full post. http://www.youtube.com/watch?v=Ywn2Lz5zmYg I like the fact that he repeatedly states that these ideas have not been experimentally confirmed, and the wrap-up where he points out that physics is not philosophy (or at least it's not supposed to … Continue reading The physics of the multiverse
Is this life real or a simulation? – Matthew R Francis – Aeon
Our species is not going to last forever. One way or another, humanity will vanish from the Universe, but before it does, it might summon together sufficient computing power to emulate human experience, in all of its rich detail. Some philosophers and physicists have begun to wonder if we’re already there. Maybe we are in … Continue reading Is this life real or a simulation? – Matthew R Francis – Aeon
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