Observatories and planetariums as specialized cultural-educated institutions apply themselves to astronomy and similar science discipline's popularization. Their activity is for pupils, students and educators of all level of school, preprimary children, various interest groups and also individuals from general public. In observatories, planetariums there are proposed for general public interesting, even unconventional views on the Universe, astral sky, Earth and human place in the Universe, by the form of multimedia programs, presentations, video projections, evening at telescope, expositions etc. The article deals with the task and position of observatories and planetariums in the education not only Physic and Astronomy, but also other, mainly Science subjects.