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。

以下是章内容：

Longterm&ions and stabiity of&ary orbits in our Soar system

Abstract

We&he&s of very ongterm numeritegrations of&ary orbita motions over 109 yr timespans inbsp;a nine&s. A quispebsp;of our numeribsp;data sho&ion of&ary orbits， sinbsp;bsp;dynamibsp;systems are charabsp;by their strong dependen initia s.

From that point of vie numeritegrations， eritegrations e–frequenbsp;maps

Athough the&ary motios very ongterm stabiity defined as the&enbsp;of bsp;enbsp;events， the bsp;nature of&ary dynamibsp;bsp;bsp;the osbsp;period and ampitude of&ary orbita motion graduay over sug timespans. Even subsp;sight fus of orbita variation in the frequenain， partibsp;in the bsp;of&h， bsp;potentiay have a signifibsp;effe its surfabsp;bsp;system through soar insoation variation bsp;Berger 1988.

To give an overvie the&， and& a the greysbsp;or bsp;bsp;into one graph for eategration. The horizonta axis of these& per unit mass. L is&o the&ary orbita energy E per unit mass as Eμ22L2. If the system is&ey inear， the orbita energy and the anguar&um in eabsp;frequenbsp;bin must be t. y in the&ary system bsp;bsp;an exbsp;of energy and anguar&um in the frequenain. The ampitude of the oost bsp;during these very ongterm&ion periods， ibsp;motion， but they& s as to&roy&abe&ary motion within the&ime of the rea Soar&he sebsp;feature， whibsp;we think is more important for the ongterm stabiity of our&ary system， is the differen dynamibsp;distaweeria and jovian&ary subsystems Ito & Tanika;1999， 2001. When we measure&ary&ions by&ua Hi radii R，&ions amoria&s are&er than 26RH，&hose among jovian&s are&han 14RH. This differenbsp;is&y&o the differeween dynamibsp;features of&ria and jovian&s.&ria&s have smaer masses， shorter orbita periods and wider dynamibsp;separation. They&rongy&urbed by jovian&hat have arger masses， onger orbita periods and narrower dynamibsp;separation. Jovian&s&&urbed by any other massive bodies.

The&errestria&ary system is sti being disturbed by the massive jovian&s. However， the wide&ion and mutua&ion among&errestria&s&he disturbaneffebsp;the degree of disturbanbsp;by jovian&s is OeJorder of magnitude of the&y of Jupiter，&he disturbanbsp;bsp;by jovian&s is a forbsp;osbsp;having an ampitude of OeJ.&ening of&y， for exampe OeJ0.05， is far from suffibsp;to provoke instabiity ierrestria&s having subsp;a wide&ion as 26RH. Thus we assume that the& wide dynamibsp;separation amoria&s > 26RH is probaby one of the most signifibsp;s for maintaining&abiity of the&ary system over a 109yr timespan. Our&aied anaysis of the&ionship&ween dynamibsp;distaween&s and the instabiity timesbsp;of Soar system&ary motion is now ongoing.

Athough our numeritegrations span the&ime of the Soar&he number of&ions is far from suffibsp;to fi the initia phase& is nebsp;to perform more and more numeritegrations toand examine iai the ongterm stabiity of our&ary dynamics.

以上段引自 Ito， T.& Tanika;K. Longterm&ions and stabiity of&ary orbits in our Soar System. Mon. Not. R. Astron. Sobsp;336， 483–500 2002

这只是作者君参考的一篇章，关于太阳系的稳定性。

还有其他论，不过也都是英的，相关课题的中献很少，那些论下载一篇要九美元Nature真是暴利，作者君写这篇章的时候已经回家，不在检测中心，所以没有数据库的使用权，下不起，就不贴上来了。