Approaches to the Origin of Life

【摘要】 <正> 1 The Origin of the Basic Molecules Relevant to Life It is true that "origin of life, as the frontier of science" has puzzled many scientists for years. It is impossible to have life on earth when a large number of asteroids come into collision with earth, which stopped 3.8×10~3 Ma before. Life began to appear on earth at about 3.5×10~3 Ma before. As to the theory of origin of life, there are 2 categories: the extraterrestrial scenario via asteriod or comets and the earth origin.更多还原