Carl Sagan

S. W. Hawking

del big bang a los agujeros negros

Historia del tiempo

"One can imagine that God created the universe at literally anytime in the past. On the other hand, if the universe is really expanding, they may be physical reasons why there had to be beginning."

"An expanding universe does not preclude a creator, but it does place limits on when he might carried out his job!"

"Today scientist describe the universe in terms of two basic partial theories-- the general theory of relativity and quantum mechanics. They are the great intellectual achievements of the first half of the century." 

"One of the major endeavor of physics today is to search for a new theory that will incorporate them both-- a quantum theory of gravity." 

My note: General relativity explains big things like space, time and gravity. Meanwhile, quantum mechanics explains small things like atoms and particles. Combining both will give understanding of black holes and first second of the Big Bang. 

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