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The Universal Diagrams and Life in the Universe

Published online by Cambridge University Press:  04 August 2017

M. Kafatos
M. Kafatos*
Affiliation:
Department of Physics, George Mason University, Fairfax, VA, U.S.A.

Abstract

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In any statement concerning extraterrestrial life one has to present the best amount of information concerning life as we know it here on earth. One way to do this is to put many classes of known objects in the universe on common plots. I call these plots the “Universal Diagrams”. The quantities plotted are mass, luminous output, temperature, size and entropy change. It is interesting to speculate where etraterrestrial life may lie on these diagrams but it seems that it will have to lie in regions more or less occupied by terrestrial life.

Type
Section IV. Universal Aspects of Biological Evolution
Information
Symposium - International Astronomical Union , Volume 112: The Search for Extraterrestrial Life: Recent Developments , 1985 , pp. 245 - 249
Copyright
Copyright © Reidel 1985 

References

Allen, C.W. 1964, Astrophysical Quantities (University of London).Google Scholar
Carr, B.J., and Rees, M.J. 1979, Nature, 278, 605.Google Scholar
Hawking, S.W. 1976, Phys. Rev D, 13, 191.Google Scholar
Norwood, J. 1976, Twentieth Century Physics (Prentice-Hall).Google Scholar
Page, D.N. 1976a, Phys. Rev. D, 13, 198.Google Scholar
Page, D.N. 1976b, Phys. Rev. D, 14, 3260.Google Scholar