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-tertegrationsandstabilitofparorbitsoursorsste
abstrat
epresenttheresultsofverlong-ternurialtegrationsofparorbitalotionsover109-rti-spansdgallnepsaquikspetionofournurialdatashosthattheparotion，atleastoursiplednaialodel，seestobequitestableevenoverthisverlongti-spanaloserlookattheloest-frequenosiltionsgalo-passfiltershosthepotentialldiffiveharaterofterrestrialparotion，espeiallthatofrurthebehaviouroftheeentriitofrurourtegrationsisqualitativelsiirtotheresultsfrojaquesskar'sseurperturbationtheor(egeax～05over～±4gr)hoever，therearenoapparentseurreasesofeentriitorlationanorbitalelentsoftheps，hihaberevealedbstilllonger-ternurialtegrationsehavealsoperfordaoupleoftrialtegrationsdgotionsoftheouterfivepsoverthedurationof±5x1010rtheresultdiatesthatthethreeajorresonanestheneptune–ptosstehavebeenataedoverthe1011-rti-span
1trodution
11defitionoftheproble
thequestionofthestabilitofoursorsstehasbeendebatedoverseveralhundredears，setheeraofontheproblehasattratedanfaoatheatiiansovertheearsandhaspedaentralrolethedevelopntofnon-leardnaisandhaostheorhoever，edonotethaveadefiteansertothequestionofhetheroursorssteisstableornotthisispartlaresultofthefatthatthedefitionoftheter‘stabilit’isvaguehenitisedretiontotheprobleofparotionthesorssteatuallitisnoteastogivealear，rigoroandphsiallangfuldefitionofthestabilitofoursorsste
aongandefitionsofstabilit，hereeadoptthehilldefition(gdan199):atuallthisisnotadefitionofstabilit，butofstabilitedefeassteasbeogunstablehenaloseenounterourssoherethesste，startgfroaertaitialonfiguration(habers，etherill≈ap;ap;boss1996;ito≈ap;ap;tanikaa1999)assteisdefedasexperiengaloseenounterhentobodiesapproahoneanotherithanareaofthergerhillradiotherisethessteisdefedasbegstableheneforardestatethatourparssteisdnaiallstableifnoloseenounterhappensdurgtheageofoursorsste，about±5gridentall，thisdefitionaberepedbonehihanourreneofanorbitalrossgbeteeneitherofapairofpstakespethisisbeaeeknofroexperienethatanorbitalrossgisverlikeltoleadtoaloseenounterparandproarsstes(oshaga，kokubo≈ap;ap;ako1999)ofoursethisstatentannotbesiplappliedtosstesithstableorbitalresonanessuhastheneptune–ptosste