Isibhakabhaka sika-Okthoba sinikeza enye yaleyo zibuko ofuna ukuyibona ngaphandle kokujaha: amaDraconids, a i-meteor showerESpain, futhi ngokuvamile enyakatho nenkabazwe, Angabonakala ngeso lenyama phakathi nobusuku bokuqala benyanga., ngaphandle kwesidingo sezibonakude noma izibonakude, inqobo nje uma amafu ecwebile futhi sigwema ukungcola kokukhanya.
Ayini ama-Draconids futhi kungani enza?
Ama-Draconids aqala lapho uMhlaba udlula ezinsalela zomhlaba Inkanyezi enomsila 21P/Giacobini–Zinner, inkanyezi enomsila yesikhathi esifushane eshiya umkhondo wothuli neqhwa emzileni wayo. Njengoba lezi zinhlayiya zingena emkhathini, ziyashisa futhi zihlakazeke, zikhiqize ukukhanya esikubona njengokufana. Izinkanyezi zokudubula.
Iphuzu esibhakabhakeni ezibonakala zivela kulo libizwa ngokuthi i-radiant futhi likuqoqo lezinkanyezi i-Draco. Ngakho igama labo. Eduze kwezinkanyezi u-Eltanin noRastaban, "amehlo kadrako," sizothola inkomba ezosiqondisa, nakuba ama-meteor angawela noma iyiphi indawo yesibhakabhaka.
Olunye lwezimpawu zalo yijubane: Ama-meteor ahamba kancane, acishe abe ngu-20 km/s, okwenza kube lula ukulandela indlela yayo ngeso uma kuqhathaniswa nezinye izimvula ezisheshayo.
Umsebenzi wayo omaphakathi eminyakeni evamile useduze ama-meteors ambalwa ngehora, kodwa ukuziphatha kwabo akunangqondo. Ngo-1933 no-1946, kwaqoshwa iziphepho ezinezinkulungwane zama-meteor ngehora, futhi ngo-2011, ukuqhuma okuphawulekayo okunamakhulu ambalwa ngehora kwabonwa kabanzi eYurophu.
Izinsuku, izikhathi kanye nezibikezelo zomsebenzi
Ngo-Okthoba, ama-Draconids ayasebenza kusuka ku-6 kuye ku-10, nenani eliphakeme elilindelwe ku- I-8 ngo-OkthobaEzweni lethu kufanelekile ukubhekwa kusukela kuhwalala kuze kube phakathi kwamabili, lapho i-Draco iphakeme futhi i-radiant ithanda ukubonakala kwama-meteor abonakalayo.
Kulo nyaka iNyanga idlala ngokumelene nawe: cishe ngomhlaka-7-8 izobe igcwele, okusho ukuthi ukukhanya okuningi kwangemuva nokulahlekelwa kwama-fainter meteors. Nokho, ezigqame kakhulu kufanele zibonakale uma isibhakabhaka sicacile futhi indawo ezungezile imnyama.
Izibikezelo zikhuluma ngo-a ukuqhuma okufushane okungase kwenyuse izinga ukuze 150-400 meteors ngehora amahora ambalwa. Amanye amamodeli abeka inani eliphakeme kakhulu ngesikhathi sakusihlwa, ngakho-ke ezingxenyeni ezithile zaseYurophu kungaqondana namahora okukhanya kwasemini; ngakho-ke, buka nje sekumnyama mhlaka 8 Kuhlala kuyisu eliphusile kakhulu ukuzama ukubamba ukunwebeka okusebenzayo okubonakalayo kusuka eSpain.
Izibalo eziningana ze-orbital ziphakamisa ukuthi, kulandela ukuphazamiseka kwamandla adonsela phansi yi-Jupiter eminyakeni ezayo, ngeke sikubone ukuphinda okufanayo okufanayo kuze kube ngu-2078Kunoma ikuphi, njenganoma ikuphi ukuna kwemvula okungalindelekile, kungcono kakhulu ukugcina okulindelekile okungokoqobo: kungase kuhlale kunokwenyuka okusesilinganisweni noma ukumangala nge-spike ephawulekayo.
Kuphi futhi kanjani
Ukuthuthukisa ukubonakala kunokhiye ababili: isibhakabhaka esicacile nokukhanya okuncane okwenziwaSuka edolobheni, thola umkhathizwe obanzi, futhi ugweme ukukhanya okuqondile. Umata noma isitulo segumbi lokuphumula sizokusiza ukuthi ubuke ngokunethezeka ingxenye enkulu yendawo yasezulwini.
Azikho izinto zokusebenza ezidingekayo. Empeleni, Izibonakude zinciphisa inkambu yokubuka futhi azisebenzi ezihlahleni ze-meteor. Kungcono ukusebenzisa amehlo akho, ukuvala amakhaza, futhi ubekezele okungenani ihora lokubheka okuqhubekayo.
Ngaphambi kokuthi uqale, vumela amehlo akho alungise: Imizuzu engama-20–40 ngaphandle kwezikrini noma izibani Zikhulisa kakhulu ikhono lokubona imigqa efiphele. Uma iNyanga icwebezela, zama ukuzimisa ngesithiyo eceleni (udonga noma isihlahla) esisitha kancane.
Ukuze uziqondise, bheka enyakatho: okukhazimulayo kuse-Draco, phakathi kwe-Big Dipper kanye ne-Little Dipper. Noma kunjalo, ama-meteors angavela kunoma iyiphi indlela, ngakho-ke kuhle ukubuka indawo ebanzi yesibhakabhaka. Izinhlelo zokusebenza zemephu yesibhakabhaka zingakusiza ukuthi uthole imilaza.
Inkanyezi enomsila 21P/Giacobini–Zinner kanye nemvelo engalindelekile yeshawa
Inkanyezi enomsila, i-21P/Giacobini–Zinner, iyinkanyezi enomsila ejikeleza iLanga cishe iminyaka emi-6,6Esikhathini sayo sokugcina, i- I-29 March ka-2025, ivuselele ingxenye yomzila wezinto umhlaba odlula kuzo ngo-Okthoba.
Imifudlana yothuli eshiywe yinkanyezi enomsila ayifani: iqukethe imicu eminyene okuthi, lapho ihlangana ne-orbit yethu, bangela ukwanda okungazelelwe kwama-meteorsYingakho idumela layo "njengelotho": kukhona iminyaka ehlakaniphile neminyaka eneziqongo ezimangalisayo.
Imvelo yamandla adonsela phansi nayo inendima. Ukusebenzelana namaplanethi amakhulu njengeJupiter kungaphambukisa kancane imifudlana yemfucumfucu, kushintshe inani lezinhlayiya esihlangabezana nazo. Empeleni, Ukulungiswa kwe-orbit enkulu kulindeleke ngemuva kuka-2029, okunganciphisa amathuba okuqubuka kwezifo ezinkulu amashumi eminyaka ambalwa.
Njengelukuluku lomlando, lenkanyezi enomsila yayinjalo eyokuqala yavakashelwa umkhumbi-mkhathi: I-ICE probe yandizela emsileni ngo-1985, ihlinzeka ngedatha ebalulekile nge-cometary plasma nothuli namuhla olusiza amamodeli emvula afana nama-Draconids.
Uma isimo sezulu sisihle, idethi yokuzama icacile: ebusuku ngo-Okthoba 8, kusukela kuhwalala kuze kube phakathi kwamabili, endaweni emnyama futhi ngokubona kwakho sekushintshile. Naphezu kwenyanga egcwele, ama-meteor akhanya kakhulu kufanele abonakale, futhi kukhona ithuba lokuqhuma okuncane okungenza ubusuku kube okukhulunywa ngakho kakhulu onyakeni phakathi kwababukeli besibhakabhaka.
