THE RULE OF HOMOLOGOUS LINEARITY OF THE INTERSTELLAR POLYYNECYANIDES AND THE ESTIMATION OF THE EVOLUTION AGE OF TMC-1

Ⅰ. INTRODUCTION In 1971, HCN was discovered in the interstellar space by means of radio telescope, and afterwards HC3N was detected in the same year. In 1976, HC5N was determined in TMC-1. All of these discoveries attracted much general attention. They were con-