Domestic astronomy is the prototype of a meteorological apartment where you no longer occupy a surface, you occupy an atmosphere. As they leave the floor, the functions and furnishings rise: they spread and evaporate in the atmosphere of the apartment, and they stabilize at certain temperatures determined by the body, clothing and activity. According to the law of Achimedes, hot air rises while cold air descends and this physical reality has a direct influence on the distribution of temperatures inside the apartment. One can measure large disparities of temperature between the floor and the ceiling. For example, it will be 19 degrees Celsius at the level of the feet and 28 degrees Celsius, three meters above that, right under the ceiling. This high temperature under the ceiling is absolutely useless and energy loss. It even becomes a problem today in the face of the question of global warming against which the politics of sustainable development are fighting by reducing energy consumption in building interiors. In effect, these 8 degrees Celsius above 20 degrees Celsius, which one find just under the ceiling, are wasted energy that benefits no one.?? Our purpose today is to take into account these physical disparities in the distribution of temperatures in the space and to take advantage of them in order to transform the way of inhabiting space by leaving the exclusivity of a horizontal mode of habitation in the interior for a vertical mode of inhabitation where one can inhabit different thermal zones, different strata, different altitudes.?Domestic astronomy creates a domestic ecosystem like a kind of second astronomy in the home, where combinations of temperature, lights, time and place are reconfigured.