The Expanding Universe and the Origin of the Great Nebulæ

Details The Expanding Universe and the Origin of the Great Nebulæ The Expanding Universe and the Origin of the Great Nebulæ

Jan 1939

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1939natur.143..158j&link_type=abstract

Nature, Volume 143, Issue 3613, pp. 158-159 (1939).

Physics

1

Scientific paper

Prof. G. Gamow and Dr.E. Teller have propounded1 an interesting view of the genesis of the nebulæ, but I doubt if either their arguments or their calculations can survive criticism. In brief, they think that the average density of matter in the present universe is about 10-30 that matter of this density, spread uniformly as a gas through space, could only condense into the present nebulæ if the gas-molecules were at a temperature of ``several million degrees, which seems to be very unlikely'' that for condensation to have taken place in the past, internebular distances must have been less than now by a factor of about 1,000. ``Since the present average distance between the nebulæ is just about 1,000 times larger than their diameters, we conclude ...'' and so on. Their whole cosmogony is based on the supposed equality of these two factors of 1,000. I believe both to be wrongly calculated.

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