Misconceptions - Misconceptions Many secondary sources have...

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Misconceptions Many secondary sources have reported a wide variety of incorrect figures for the size of the visible universe. Some of these figures are listed below, with brief descriptions of possible reasons for misconceptions about them. 13.7 billion light-years . The age of the universe is estimated to be 13.7 billion years. While it is commonly understood that nothing can accelerate to velocities equal to or greater than that of light, it is a common misconception that the radius of the observable universe must therefore amount to only 13.7 billion light-years. This reasoning makes sense only if the universe is the static spacetime of special relativity, but in the real universe, spacetime is expanding , as evidenced by Hubble's law . Distances obtained as the speed of light multiplied by a cosmological time interval have no direct physical significance. [21] 15.8 billion light-years . This is obtained in the same way as the 13.7 billion light year figure, but starting from an incorrect age of the universe which was reported in the
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This note was uploaded on 12/15/2011 for the course AST AST1002 taught by Professor Emilyhoward during the Fall '10 term at Broward College.

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Misconceptions - Misconceptions Many secondary sources have...

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