ABSTRACT
The fifth chapter tries to summarize the efforts made to determine the time and place of the origin of life. Life, as we know, is (H-C-N-O)-based and relies on the number of bulk and trace elements. Of interest is a hypothesis that speculates that it originated when the essential trace element abundance curve of the last universal common ancestor and the galactic abundance curve coincided. Interstellar molecular clouds are factories for complex molecular synthesis. In addition to gas, interstellar material also contains small micron-sized particles. There are many other scenarios described in the literature. Nowadays, the scenario that life originated long before the origin of the Earth is receiving some attention. Therefore, one needs to assume that life was brought to the Earth in the process of its formation! The role of cosmic dust mineral grains in this process must be considered. The primordial process that turns enormous clouds of cosmic dust into newborn planets over millions of years has recently been observed directly.
