Abstract
Since 1995, the University the Carabobo, in Venezuela, has come developing a program of astronomical popularization and learning Astronomy using the Non formal education methods. A synopsis of the activities is presented. We will also discuss some conceptual aspects about the extension of the knowledge like supplementary function of the investigation and the university teaching. We illustrate the characteristics of the communication with an example of lectures and printed material. The efficiency of the heuristic arguments could be evaluated through a ethnology study. In that order of ideas, we show some images of the activities of astronomical popularization. We can see the population and great concurrence with chronological (and cultural) heterogeneity. We conclude that the Non formal education, structured with characteristic different to the usual educational instruction, constitutes a successful strategy in the diffusion and the communicating astronomy.