摘要
根据光速不变原理，论述了天体引力作用中不必要超距作用，保证作用力与反作用力相等；引入“引力场”概念能保证两个天体和它们的引力场系统的动量守恒。
In this paper, according to the Proncople that special relativity light vcloclty is constant,thc writcr discusses the unnecessary 'action - at - a - distant' in celestial bodles gravitation aetion which keeps the equality of action and reaction, and then, we get the result conservation of total momcntum. lf thc conception of gravitational field is introduced into, momentum conscrvation-the momcntum conservation of celestial bodies and the system of their gravitation fleld comes into being.
