Ngo-2017, isivakashi esingajwayelekile sabonakala ohlelweni lwelanga - into encane, ende kakhulu, ehamba endaweni enkulu endizeni yayo. Ukwahlulela nge-trajectory, isivinini, ifomu elingalungile nezinye izici, kungaba yi-comet noma i-asteroid, efike kolunye uhlelo lwezinkanyezi. Ngasikhathi sinye, uqhubekela ngesivinini esikhulu kangaka futhi usitholile kangangokuba ezinye izazi zezinkanyezi azishiyi imicabango: Into 1i / Oumumumua isikhala sangempela sempucuko yangempela yempucuko yangempela.
Kodwa-ke, nge-athikili entsha (1, 2), eshicilelwe kwi-The American Geophysical Society JGR Punets, inguqulo eyodwa nje yemvelo yomzimba we-Inderdellar ilungisiwe. "Singakubona ngokunengqondo njengongqephu we-" Ecoplllon ", ofana namaplanethi e-plutton avela kolunye uhlelo," kusho ababhali bawo, uSteven Dych (uSteven Desch) wase-Arizona.
Ngokwe-hypothesis entsha, i-Omumumua yavela eminyakeni eyizigidi ezingama-400 eyedlule ngenxa yomthelela womzimba we-cosmic ebusweni beplanethi yakhe yomama. Ijubane layo elikhudlwana, lapho ngesikhathi sokuvikelwa kweLanga landa kakhulu, ababhali bachazwa ngokuthobeka kweqhwa ebusweni. Amaplanethi, afana noPluto, acebile kwi-nitrogen eqandisiwe - mhlawumbe nguyena avele, anikeze ama-omumum ukusheshisa okwengeziwe.
Ngokusho kososayensi, selokhu kwafakwa entweni ohlelweni lwelanga ngo-1995, usevele ulahlekelwe ngamaphesenti angama-95 esisindo sawo, "ukoma" esimweni esingalungile futhi uthole ijubane elihlukile lamakhilomitha ayizinkulungwane ezingama-300 ngehora . Ngakho-ke, ngo-2017, i-Omumumua yakhukhulwa ngokushesha okukhulu ngokunikeza izazi zezinkanyezi zizoligcina ngokoqobo amasonto ambalwa ngaphambi kokuba izithonjana zanyamalala. Ngenxa yalokho, bekungenzeki ukukubheka, futhi ochwepheshe bahlala bebonisana ngohlobo lwalesi sigungu sezulu esingajwayelekile.
Umthombo: Isayensi Enqunu