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Thread: Olbers paradox

  1. #1 Olbers paradox 
    Forum Masters Degree thyristor's Avatar
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    Heard of Olbers paradox?


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  3. #2  
    Forum Professor wallaby's Avatar
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    nope, please tell.


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  4. #3  
    Forum Freshman IrishStu's Avatar
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    Here ye go!! Interesting read....

    http://en.wikipedia.org/wiki/Olbers'_paradox
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  5. #4 Summery of Olbers' Paradox 
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    Here's just a quick summery:

    Olbers' paradox states that the night sky should be infinitely bright in an infinite [and static] universe as there would be superposition (summing up) of an infinite number of stars' brightnesses .

    The way physics has solved this is that whilst the universe may be infinite, the speed of light is finite as is the age of the universe so the light from some [most] stars has not yet reached us.

    In addition the article argues that light is redshifted due to an expanding universe (ie the light becomes infrared > microwave EM waves) so would no longer be visible light anyway but in since stars give of gamma radiation that argument can technically be explained away on its own .
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