Olbers' Paradox

Details Olbers' Paradox Olbers' Paradox

Jan 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979s%26w....18....4l&link_type=abstract

Sterne und Weltraum, vol. 18, Jan. 1979, p. 4-8. In German.

Astronomy and Astrophysics

Astronomy

Astronomical Models, Night Sky, Paradoxes, Sky Brightness, Stellar Luminosity, Big Bang Cosmology, Zodiacal Light

Scientific paper

Olbers (1823) has investigated the consequences of the assumption that an infinite universe is uniformly filled with stars or galaxy systems. He arrives at the conclusion that in the considered case the entire sky would have to be as bright as the sun. The fact that these conditions obviously do not apply as far as the actual sky at night is concerned is referred to as Olbers' Paradox. Attention is given to a detailed derivation of Olbers' findings, a qualitative interpretation of the observed conditions, simplifying assumptions in Olbers' considerations, the factors which have to be considered in a quantitative study, energy and age of universe relations, model calculations, and observational data. It is found that the conclusions obtained by Olbers do not apply because of the expansion of the universe and its finite age.

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