Chemical Cosmogony and Interstellar Molecules

The chemistry of the early history of the earth and other planets depends upon the cosmic abundance of the elements, the temperature of the accumulating planets and the gravitational fields which permit or prevent the escape of gaseous molecules and the properties of chemical substances under the conditions existing. Because of the detailed character of chemical evidence considerable information in regard to the early history can be deduced. [96] 

Urey s theory was closely related to an earlier theory of the formation of the planets proposed by the German physical chemist Arnold Eucken in 1944. [97] However, 

The real breakthrough of interstellar chemistry belongs to the post-war period and depended on the development of radioastronomy and microwave technologies that opened up quite new perspectives in celestial chemistry. However, since this modern phase only started in 1963 (with the detection of the radio signature of OH), 

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