Kungani amaplanethi nezinkanyezi ziyindilinga? Yini eyenza zibe yindilinga? Ingabe sikhona esinye isimo?
Akuwona wonke amaplanethi nezinyanga eziyindilinga. Kunokwehlukahluka okuthile ekwakhekeni kwazo kuye ngobuningi bazo, futhi kungase kube khona ngisho namazwe abukeka ngendlela exakile, angafani nanoma yini esiyaziyo evela esimisweni sethu.  Yonke into eseplanethini noma enyangeni ingaphansi kwethonya lamandla adonsela phansi ngendlela yokuthi izingcezwana zayo zingathuthela enkabeni uma zingakwazi. Ngaphansi kwezimo ezifanele, yayiba nomumo oyisiyingi. Ezintweni ezenziwe ngento engeyona uketshezi, kuyahlukahluka ukuthi ziba yindilinga ngasiphi isikhathi. Ngokuvamile kucatshangwa ukuthi ngokuvamile ziba yizigcawu ezinobubanzi obungaba amakhilomitha angu-400 uma zenziwe ngezinto ezibandayo ezivame ukutholakala eMkhathini wethu. Noma kunjalo, uma into ethile yenziwe ngento eqinile ngokwengeziwe, kudingeka ibe nkulu kunalokho - cishe i-750 km/466 miles. Lapho inesisindo esanele, ngisho namadwala aba njengoketshezi. Inyanga kaMars iDeimos ingamakhilomitha angu-12,6 kuphela ububanzi futhi ayiyona eyisiyingi, futhi kunamanye amasayithi amancane amaningi amanye amaplanethi angenayo imilo eyindilinga.  Nokho, akupheleli lapho. Izinto zezinkanyezi ziyajikeleza, zize zibe nomumo oyisicaba wesibuko lapho ukujikeleza kwazo kushesha uma zinamandla ngokwanele. Ngaphezu kwalokho, zingaba nezinyanga. Lokhu kubangela ukuba kwakheke isigaxa esimweni somzimba wazo ozungezayo. Endabeni yoMhlaba, iNyanga yethu ibangela amagagasi ngale nqubo. Futhi, iLanga lethu linikeza iplanethi yethu amagagasi. Kwezinye izindawo endaweni yonke, kungase kube namaplanethi anezinyanga ezinkulu noma amaplanethi amabili amakhulu afanayo, abizwa ngokuthi amaplanethi aphindwe kabili, azungeza isikhungo sawo esivamile sesisindo, i-barycenter, eseduze, okungabangela ukuqhuma okunamandla nakakhulu. Ngale ndlela, isimo sawo sasiyobonakala ngokucacile.  Ekugcineni, iplanethi eyisimanga, eyi-toroid, eboniswe ngenhla, ingazinza ngokwalokho esikwaziyo ngokomzimba, okungenani isikhashana. Njengoba ngishilo ngaphambili, ngisho namadwala aqinile aziphatha njengoketshezi uma enesisindo esikhulu. Ijubane lokujikeleza elilingene lingalinganisa amandla adonsela phansi ngokusheshisa okuyi-centrifugal, futhi iplanethi enesimo se-torus ingase ibe khona. Isimo esingaba khona sokuthi izwe elinjalo libe khona kungaba uma amaplanethi amabili ajikeleza ngokushesha ngokwanele engqubuzana futhi akha idonathi yetshe elihwamukile, okuthiwa i-synestia.  Okwamanje sicabanga ukuthi izenzakalo ezingaholela ekwakhekeni kwezwe elinalo mklamo azinakwenzeka kangangokuthi kungenzeka ukuthi ayikho iplanethi eyodwa eyi-toroidal endaweni yonke ebonakalayo, kodwa sasimangala izikhathi eziningana ngalokho esakuthola phakathi nokuhlola kwethu indawo yonke. Mhlawumbe ngolunye usuku siyothola ngisho nezwe elimise okwedonathi.