This paper assumes that an extraordinary invisible spatial perfect fluid sink flow that has a critical flow speed equal to light speed c, which can be treated as four-dimensional Minkowski continuum. As considering all elementary particles act as spatial perfect fluid sinks of infinitesimally small strengths, Newtonian dynamics can be extended while theoretically deriving formulas of the relativistic mass increase and the inverse square law of gravity, with an additional term that may represent the Pioneer anomaly. A mass-generation mechanism is alternatively explained on base of the spatial perfect fluid space. Scientific interpretations of concepts of mass and electric charges, and also accelerating expansion of the Universe, cyclic model of Big Rip and Bing Bang, are made.
Bayarsaikhan Bayarsaikhan Choisuren