作者君在作品相关中其实已经解释过这个问题。

不过仍然有人质疑“你说得太含糊了”，“火星轨道的变化比你想象要大得多！”

那好吧，既然作者君的简单解释不够有力，那咱们就看看严肃的东西，反正这本书写到现在，嚷嚷着本书bug一大堆，用初高中物理在书中挑刺的人也不少。

以下是文章内容：

long-term integrations and stabilityplaary orbitsour solar system

abstract

we present the resultsvery long-term numerical integrationsplaary orbital motions over 109 -yr time-spans including all nin inspectionour numerical data shows that the plaary motion，leastour simple dynamical model， seemsbe quite stable even over this very lon lookthe lowest-frequency oscillations using a low-pass filter showsthe potentially diffusive characterterrestrial plaary motion， especially that o behaviourthe eccentricitymercuryour integrationsqualitatively similarthe results from jacques laskar's secular perturbation theory (e.g. emax 0.35 over ± 4 gyr). however， there areapparent secular increaseseccentricityinclinationany orbital elementsthe plas， which mayrevealedstill longer-term numerical i have also performed a coupletrial integrations including motionsthe outer five plas over the duration± 5 x 1010 yr. the result indicates that the three major resonancesthe neptunepluto system have been maintained over the 1011-yr time-span.

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