Ubufakazi bokuba khona kweplanethi engaphandle komhlaba baqinisekiswa nini okokuqala?
Context:I-exoplanet noma iplanethi engaphandle kwelanga yiplanethi engaphandle kohlelo lwelanga. Ubufakazi bokuqala obungase bube khona be-exoplanet baphawulwa ngo-1917 kodwa abazange babhekwe njengabo. Ukuqinisekiswa kokuqala kokutholwa kwenzeka ngo-1992. Iplanethi ehlukile, eyaqala ukutholwa ngo-1988, yaqinisekiswa ngo-2003. Kusukela ngo-Ephreli 1, 2023, kunama-exoplanets aqinisekisiwe angama-5,346 ezinhlelweni zamaplanethi ezingama-3,943, kanti izinhlelo ezingama-855 zinamaplanethi angaphezu kwelilodwa. I-James Webb Space Telescope (i-JWST) kulindeleke ukuba ithole amanye amaplanethi angaphandle, futhi futhi ithole okuningi mayelana namaplanethi angaphandle, kuhlanganise nokwakheka kwawo, izimo zemvelo kanye namathuba okuba nokuphila.
Ukutholakala kweplanethi engaphandle kwaqinisekiswa okokuqala ngo - 1992