Inflation theory explains the rapid expansion of the universe from "summary" of La vita del cosmo by Lee Smolin
Inflation theory, a concept proposed by physicists in the 1980s, provides an explanation for the rapid expansion of the universe shortly after the Big Bang. According to this theory, the universe underwent a period of exponential expansion, causing it to increase dramatically in size in a very short amount of time. This expansion happened so quickly that it is difficult to comprehend, but inflation theory offers a plausible explanation for this phenomenon. During the inflationary period, the universe grew at an astonishing rate, expanding faster than the speed of light. This rapid expansion smoothed out any irregularities or inconsistencies in the early universe, leading to the uniformity and homogeneity we observe today. Inflation theory also explains why the universe appears to be flat and why it has a nearly uniform temperature in all directions. One of the key features of inflation theory is the idea of...
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