With a science paper published after his death, Stephen Hawking has revived debate on a deeply divisive question for cosmologists: Is our Universe just one of many in an infinite, ever-expanding “multiverse”? According to one school of thought, the cosmos started expanding exponentially after the Big Bang. In most parts, this expansion or “inflation” continues eternally, except for a few pockets where it stops. These pockets are where universes like ours are formed — multitudes of them that are often likened to “bubbles” in an ever-expanding ocean dubbed the multiverse. Many scientists don’t like the idea, including Hawking, who said in an interview last year: “I have never been a fan of the multiverse.”
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0:00 Introduction
0:20 STEPHEN HAWKING’S LAST THEORY
3:43 The problem with the usual account of eternal inflation is that it assumes an existing background universe that evolves according to Einstein’s theory of general relativity and treats the quantum effects as small fluctuations around this
4:00 However, the dynamics of eternal inflation wipes out the separation between classical and quantum physics. As a consequence, Einstein’s theory breaks down in eternal inflation.
5:13 When we trace the evolution of our universe backwards in time, at some point we arrive at the threshold of eternal inflation, where our familiar notion of time ceases to have any meaning.
6:03 We predict that our universe, on the largest scales, is reasonably smooth and globally finite. So it is not a fractal structure.
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Nice tribute to Mr. Hawking, may he rest in peace. God bless his family.
Regarding the Multiverse Theory, anything can be said about something that is not there. Fortunately, Mr. Hawking was wise enough to say in his paper that "the theory can't be tested". Regarding Eternal Inflation, the logic of the Kybalion gives a more simpler answer: All things have rhythm, like the swing of the pendulum. In other words, the Universe is expanding and contracting, like the ocean tide, or a heartbeat. Regarding the Big Bang, the current understanding of energy does not assume opposites… String theory….ah eff it, quantum physics doesn't know shit, it doesn't pay attention to nature.
Thank you for sharing this.!!!
What started the first universe and what started that before that, and what started that before that all way back to the beginning of that and then what actually really began to start then and why and what did that'and why did it do that… it's nuts to think about ..
The mind is all..the Universe is mental.
Imagine a world if such geniuses knew the TRUE relationship between man and the universe he lives in. Unfortunately the illuminates of today do not hold power positions.