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Published online by Cambridge University Press: 12 April 2016
Radio pollution of space is connected with general ecological conditions resulting from world development. A practical aspect of the problem is related to the possibility of making radioastronomy observations of cosmic emissions and searching for signals from extraterrestrial civilizations over almost all of the entire radio spectrum. For this purpose, it was decided at WACR-79 to keep a quiet zone on the shielded side of the moon. Here we shall discuss the problem as it relates to an observatory in orbit. The vicinity of the L2 Lagrangian point of the earth-sun system is of particular interest as a location for such an observatory.