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||Aeron ... Is not it, a beautiful word. And evokes romantic associations with astronomy and aeronautics. But, of course, differs from that and the other. What is Aeron? If you ask this question is different professionals involved in the study Earth's atmosphere, we get several different answers. The reason is that the boundaries young science Aeronomy - brainchild of rocket and satellite enthusiasm of the early 60's - still pretty fuzzy. Does the management of Aeronomy stratosphere? A troposphere? If not, where meteorology - the science of surface air enters Aeronomy - The science of the upper atmosphere? And whether Aeronomy include everything that we study in the upper atmosphere? For example, the tides and the winds flow micrometeors, distribution radio waves in the ionosphere - is not all this a subject of study aeronomy? Clear answers to these questions do not exist. And not very good visible prospect of a clear definition of the boundaries Aeronomy. For these questions have come out in recent years, due to the continuous expansion of the atmospheric research. And their further expansion may lead to greater complexity (Or, if you will, extension) of "Aeron". Here we consider the Aeronomy primarily as a science of the structure of the upper Earth's atmosphere and micro-processes occurring in it. Exactly understood Aeronomy Belgian scientist M. Nichols, who first introduced this concept in everyday tool upper atmosphere, and in 1961 wrote the first book on the Aeronomy *. Thus, in our view should go looking for Aeronomy answers questions: How does the upper atmosphere, and what physical and chemical processes responsible for its construction. The first question involves the study of distribution height and variations of so-called thermobaric atmospheric parameters (Ie, density, temperature, pressure, gas) and the concentrations of the various components atmospheric gas, from the basic, such as nitrogen and oxygen, to the so-called small constituents in concentrations of small fraction of a percent of concentration of the main component.