Ngenxa yobungakanani obungenasiphelo bendalo iphela, umhlaba kunye nesathelayithi yendalo ngummelwane wasemnyango olandelayo, njengoko kubonisiwe ngu lo mfanekiso ukusuka I-OSIRIS-REx yeNASA isiphekepheke.

Isiphekepheke sisendleleni eya kwi-asteroid, iBennu, enokuthi ngelinye ilanga idibane noMhlaba- nangona ingekho kangangeenkulungwane ezininzi, ngokweNASA. I-OSIRIS-Rex iya kuthi-ukuba konke kuya kwisicwangciso-ukufikelela kwi-asteroid ngoDisemba. Kodwa okwangoku, ziyathumela kwakhona iifoto ezinomdla zehlabathi lethu.

Idibeneyo: Nazi iilwandle ezingama-365-Inye yonke imihla ngo-2018

Imifanekiso emithathu ethathwe kumgama omalunga nezigidi ezi-3 zeekhilomitha ukusuka eMhlabeni isetyenziselwe ukwenza le nto ingentla.

Ikude Kangakanani Inyanga Emhlabeni?

Konke kuxhomekeke xa ubuza, kuba umgama phakathi koMhlaba kunye inyanga ihlala itshintsha. Ngokomyinge, inyanga ziimayile ezingama-238,855 ukusuka eMhlabeni, kodwa iyatshintsha ngokwexesha lonyaka. Inyanga ijikeleza umhlaba kwi-elliptical orbit, ke inenqaku kwinyanga nganye xa isondele kakhulu emhlabeni (ebizwa ngokuba yi-perigee) kunye nenqaku xa i-apos ikude kakhulu (ebizwa ngokuba yi-apogee). I-orbit yayo ayisosangqa sigqibeleleyo, kwaye umahluko phakathi kwe-perigee kunye ne-apogee imalunga neekhilomitha ezingama-25,000. Oko kukwi-10% yomgama ophakathi phakathi komhlaba nenyanga.

Wakhe weva ngeMicromoon? Abathandi kangako njenge-Supermoons, kodwa zenzeka xa inyanga epheleleyo isondele kufutshane nenyanga kunye ne-apos; eyona ndawo ikude yonyaka. Ngo-2018 oko kuyakwenzeka ngoJanuwari 15, xa inyanga iya kuba ngama-252,565 eemayile kude. Nokuba yeyiphi indlela, uJanuwari 2018 yinyanga entle yokujonga inyanga.

Kuthatha ixesha elingakanani ukuya eNyangeni?

Akukho Apos yohambo losuku: Oosomajukujuku beApollo ngeminyaka yoo-1960 kunye neyee-1970s bathatha iintsuku ezintathu ukufikelela enyangeni. Nangona kunjalo, inyanga ayisoloko ikumgama ofanayo kude noMhlaba kwaye namhlanje yeyona apos yona ikufutshane kuyo.

Kwiikhilomitha ezingama-221,559 ukusuka eMhlabeni, inyanga yayiye, ngomhla wokuqala we-2018, kweyona ndawo ikufutshane kunyaka. Xa inyanga ikwi-perigee ingqamana nenqanaba layo elipheleleyo, sisihlandlo esikhethekileyo- iSupermoon. Ngobu busuku inyanga yethu inokukhangeleka ngathi inkulu kunesiqhelo- nangona kuphela ukuba uyayibukela iphakama ngaphezu kwempuma (empuma) xa litshona ilanga.

Ngaba iNyanga inkulu kunoMhlaba?

Ngelixa ububanzi bomhlaba buziimayile ezingama-7,917 (ukwenza isazinge sama-24,901 eemayile), inyanga inobude obuziimayile ezingama-2,159 kuphela (kumjikelo wee-6,786 zeekhilomitha).