Some comments on problems connected with our knowledge and understanding of events observable during the meteoroid flight through the atmosphere are presented. The review is divided into
three parts. Tbe first part deals with the section of flight characterized by the increase of body temperature from the value reached at the heliocentric distance 1 AU, i.c. at the frontier of the Earth´s atmosphere, which was estimated to be approximatelly 280° K, to the temperature at which the evaporation of the meteoroid can start. This process is designated as pre-ablation heatlng. The second part deals with efects connected with the visible trajectory as well as with ionization trails and problems related to them. There exists generic connection between luminous flight of meteoroids and dark flight with possibility of finding the meteorites fallen to the ground namely with the predictabllity of the impact area and the impact itself. This is the subject of the third part.