Abstract
In 2000, the author presented a new discovery about the same material friction to produce the same charge at the ninth electrostatic conference of Chinese physical society. Through this important new discovery, the author puts forward a new theoretical system of physics in the 21st century. According to the theory and experimental facts of inter satellite repulsion in the new theoretical system, the author puts forward a design scheme for developing a new type of interplanetary spacecraft. I hope that mankind will speed up the pace from & quot; earth civilization era & quot; to & quot;cosmic civilization era & quot;!
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