Ososayensi bathole ukuthi izibankwakazi kungenzeka zahlala enyangeni eminyakeni eyizigidi ezingama-65 edlule. Kwenzenjani? Njengoba sazi sonke, thina bantu siwukuphela kwezidalwa eziphumile emhlabeni zaya emkhathini, ngisho nasenyangeni. Umuntu wokuqala owahamba enyangeni kwakungu-Armstrong, futhi lapho enyathela khona inyanga kungabhalwa phansi ezincwadini zomlando. Kodwa abanye abantu bacabanga ukuthi abantu akuzona kuphela izidalwa eziye zangena emkhathini, kanti ezinye izidalwa zingase zidlule kunabantu. Abanye ososayensi basikisela ukuthi izibankwakazi zangena emkhathini futhi zehlela enyangeni eminyakeni eyizigidi ezingu-65 edlule ngaphambi kwabantu.
Umuntu uwukuphela kwezinhlobo ezihlakaniphile emlandweni wokuziphendukela kwemvelo wempilo. Kungenzeka kanjani ukuthi ezinye izidalwa zikwazi ukundiza ziye enyangeni? Njengoba kunokuqagela okunjalo, kumelwe kube nesisekelo sesayensi sokukusekela. Ngaphambi kokuthi i-Chang'e 5 ibuyise inhlabathi yenyanga, izwe lethu lase linamatshe avela enyangeni, ngakho la matshe avela kanjani? Iningi lamatshe lacoshwa e-Antarctica, ngaphandle kwezipho ezivela e-United States. I-Antarctica ayikwazanga ukucosha amatshe enyangeni kuphela, kodwa namatshe avela kuMars, kuhlanganise nama-asteroid meteorite. Ithimba lohambo lwesayensi lwase-China e-Antarctic lithole ama-meteorite angaphezu kuka-10,000 e-Antarctica.
Ukucosha ama-asteroid meteorite kuyaqondakala ngoba maningi amarekhodi ama-asteroid ashayeka emkhathini futhi awele phansi. Kodwa amadwala avela enyangeni naseMars, kungani siwacosha? Eqinisweni, kulula ukukuqonda: eminyakeni emide ye-cosmic, kokubili inyanga kanye ne-Mars kwashaywa ezinye izindikimba ezincane zasezulwini (njengama-asteroids, ama-comet) ngezikhathi ezithile. Thatha iMars njengesibonelo. Uma kwenzeka umthelela, inqobo nje uma indikimba encane yasezulwini inkulu futhi ishesha ngokwanele, ingaphahlaza amadwala angaphezulu kweMars abe yizicucu. Uma i-engeli yomthelela ilungile, ezinye zezingcezu zizothola amandla e-kinetic ukuze zibalekele amandla adonsela phansi e-Mars futhi zingene emkhathini. “Ziyazulazula” emkhathini, futhi ezinye izingxenye zizobanjwa amandla adonsela phansi oMhlaba futhi “ziqhuqhumbe” zibheke phezu komhlaba. Kule nqubo, ezinye izicucu ezincane kanye nezingcezwana ezihlelekile zizosha emkhathini ngomfutho ophezulu kanye nezinga lokushisa eliphezulu kanye ne-gasify, futhi isisindo esisele esikhudlwana nezingcezu ezihlelwe ngokuqinile zizofika emhlabeni. Baziwa nangokuthi "amadwala e-Mars". Ngokufanayo, ama-craters amakhulu namancane endaweni yenyanga nawo aphihlizwa ama-asteroids.
Njengoba amadwala asenyangeni naseMars ekwazi ukuza emhlabeni, ingabe amadwala asemhlabeni angafinyelela enyangeni? Kungani kuthiwa ama-dinosaurs ayizinhlobo zokuqala ezifika enyangeni?
Cishe eminyakeni eyizigidi ezingu-65 edlule, iplanethi enkulu enobubanzi obungamakhilomitha angu-10 kanye nesisindo esingaba amathani ayizigidi eziyizinkulungwane ezimbili yashaya umhlaba futhi yashiya umgodi omkhulu. Nakuba manje umgodi umboziwe, awukwazi ukungcwaba inhlekelele eyenzeka ngaleso sikhathi. Ngenxa yobukhulu beplanethi, yabhodloza “imbobo” yesikhashana emkhathini. Ngemva kokushaya phansi, kungenzeka ukuthi inqwaba yezingcezu zamatshe yayikhishwe emhlabeni. Njengendikimba yasezulwini eseduze kakhulu noMhlaba, inyanga kungenzeka ithwebule izingcezu zamadwala oMhlaba andiza aphuma ngenxa yomthelela. Ngaphambi kokuba lo “mthelela” wenzeke, izibankwakazi zase ziphile iminyaka engaphezu kwezigidi eziyikhulu, futhi inani elikhulu lezinsalela zama-dinosaur lase likhona kakade ochungechungeni lomhlaba, ngakho ngeke sikubeke eceleni ukuba khona kwezinsalela zama- dinosaur ezingxenyeni ezaphonswa emhlabathini. inyanga.
Ngakho-ke ngokombono wethiyori yesayensi, ama-dinosaurs kungenzeka ngempela ukuba yizidalwa zokuqala ezifika enyangeni. Nakuba kuzwakala njengephupho, isayensi iqondakala ngokuphelele. Mhlawumbe ngolunye usuku esikhathini esizayo, sithola ngempela izinsalela zama-dinosaur enyangeni, futhi akufanele simangale ngaleso sikhathi.
Iwebhusayithi esemthethweni ye-Kawah Dinosaur:www.kawadinosaur.com