Constraints Imposed by Cosmic Evolution Towards the Development of Life
The probability of terrestrial-týpe life emerging in any other place of the universe will depend on the constraints imposed by cosmic evolution on that particular place. A systematic examination of cosmic constraints, which in the case of the Earth must have provided the necessary and sufficient conditions for the origin and evolution of life on our planet, shows that they are concerned with the nature of the central star, the planetary system, and the specific life-bearing planet, as well as with the chemical and biological evolution processes involved. These constraints or universal requirements for life, are briefly described below.
KeywordsPlanetary System Central Star Biogenic Element Hydrogen Cyanide Cosmic Evolution
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