Olbar suggested that the night sky is dark because the universe was finite in its existance. He deduced that, if the universe was inifinitely old, then in every direction in which you looked, you eye would fall upon a star. One of the 'best answers' to this question when it was last asked, addressed an expanding universe, not an infinitely old universe. If we look at Olbars Paradox in an inifinely old universe, the the question becomes, since we know that stars have a finite life time, could all stars in that infinely old universe that are older than a certain life (say older than 100,000 year) have simply burned out and is, therefore, no longer emitting light, making it impossible to see them? Here we can have an infiniteyl old universe and still retain our 'dark sky' at night.
2006-08-29
18:46:02
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8 answers
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asked by
Reggie
2
in
Physics