M. Zhussupov Science, Noosphereorder Co., London, UK mjalmata@mail.ru International Journal of Fundamental Physical Sciences (IJFPS) 7 1 1-4 March, 2017 2231-8186 https://doi.org/10.14331/ijfps.2017.330100 The cosmic (physical) vacuum is modeled as a material medium forming dynamic structures in interaction with celestial bodies. These structures are proposed to have a wave nature, contributing to gravitational wave phenomena. A key result is the derivation of a background gravitational wave frequency (~0.06 Hz) based on the density of vacuum and gravitational constant. The paper models gravitational waves across the solar system, evaluating their role in planetary motion and proposing a framework for the detection of gravitational waves from exoplanetary systems using instruments like LISA. It is concluded that the vacuum plays a decisive role in the structure and dynamics of observed systems. Cosmic Vacuum, Gravitational Waves, Frequency, Density Of Physical Vacuum, Exoplanets https://creativecommons.org/licenses/by/4.0/