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Before the discovery of quantum mechanics, the framework of physics was this: If you tell me how things are now, I can then use the laws of physics to calculate, and hence predict, how things will be later.

Brian Greene

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Brian Greene
Age: 61
Born: 1963
Born: February 9
Actor
Author
Physicist
Professor
Theoretical Physicist
Writer
New York City
New York
Brian Randolph Greene
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Physics
Discovery
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I enjoy reading blogs, but am not interested in having my spurious thoughts out there.
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There may be many Big Bangs that happened at various and far-flung locations, each creating its own swelling, spatial expanse, each creating a universe - our universe being the result of only one of those Big Bangs.
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Our eyes only see the big dimensions, but beyond those there are others that escape detection because they are so small.
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Gravity is matter’s sugar daddy.
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When you know the answer you want, it is often all too easy to figure out a way of getting it.
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I wouldn't say that The Fabric of the Cosmos is a book on cosmology. Cosmology certainly plays a big part, but the major theme is our ever-evolving understanding of space and time, and what it all means for our sense of reality.
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I have long thought that anyone who does not regularly - or ever - gaze up and see the wonder and glory of a dark night sky filled with countless stars loses a sense of their fundamental connectedness to the universe.
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To tell you the truth, I've never met anybody who can envision more than three dimensions. There are some who claim they can, and maybe they can it's hard to say.
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Physicists have come to realize that mathematics, when used with sufficient care, is a proven pathway to truth.
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The boldness of asking deep questions may require unforeseen flexibility if we are to accept the answers.
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Einstein comes along and says, space and time can warp and curve, that's what gravity is. Now string theory comes along and says, yes, gravity, quantum mechanics, electromagnetism - all together in one package, but only if the universe has more dimensions than the ones that we see.
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Black holes, we all know, are these regions where if an object falls in, it can't get out, but the puzzle that many struggled with over the decades is, what happens to the information that an object contains when it falls into a black hole. Is it simply lost?
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Assessing existence while failing to embrace the insights of modern physics would be like wrestling in the dark with an unknown opponent.
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Experimental evidence is the final arbiter of right and wrong.
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The bottom line is that time travel is allowed by the laws of physics.
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For most people, the major hurdle in grasping modern insights into the nature of the universe is that these developments are usually phrased using mathematics.
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Physicists are more like avant-garde composers, willing to bend traditional rules... Mathematicians are more like classical composers.
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The pinpoints of starlight we see with the naked eye are photons that have been streaming toward us for a few years or a few thousand.
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The beauty of string theory is the metaphor kind of really comes very close to the reality. The strings of string theory are vibrating the particles, vibrating the forces of nature into existence, those vibrations are sort of like musical notes. So string theory, if it's correct, would be playing out the score of the universe.
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According to inflation, the more than 100 billion galaxies, sparkling throughout space like heavenly diamonds, are nothing but quantum mechanics writ large across the sky. To me, this realization is one of the greatest wonders of the modern scientific age.
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