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The mean mass density of the Universe

Nature volume 321, pages 27–32 (1986)Cite this article

Abstract

Observations of galaxy clustering indicate that the mean mass density is only about one-third of that predicted by the popular Einstein–de Sitter cosmological model. Theory and observation can be reconciled if there has been large-scale segregation of galaxies from mass, but the gravitational instability of the expanding universe would tend to destroy such a segregation. Thus either conventional ideas about galaxy formation are wrong, or the Einstein–de Sitter model is not a useful approximation.

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Authors and Affiliations

  1. Joseph Henry Laboratories, Princeton University, Princeton, New Jersey, 08544, USA

    P. J. E. Peebles

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Peebles, P. The mean mass density of the Universe. Nature 321, 27–32 (1986). https://doi.org/10.1038/321027a0

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