This paper discusses a hypothetical model for Venusian noctilucent clouds,
based on the minicomet hypothesis and the analogy of the: altitude distribu
tion of temperature in the atmospheres of Venus at altitudes of 50-150 km a
nd of earth at altitudes of 0-100 km. Experimental data are presented that
con the existence of noctilucent clouds in che atmosphere of Venus. (C) 199
9 The Optical Society of America. [S1070-9762(99)01107-0].