Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Kupfuura: Kuyera kwokutanga kwakananga kwedaro kusvika kunyeredzi (61 Cygni pamakore-chiedza 11.4) kwakaitwa muna 1838 naFriedrich Bessel achishandisa unyanzvi hweparallax. Kuyerwa kweparallax kwakaratidza kuparadzana kukuru kwenyeredzi mudenga. Kucherechedza nyeredzi mbiri kwakawedzera kukosha muzana remakore rechi19. Muna 1834, Friedrich Bessel akacherechedza kuchinja kuri kuita kufamba kwenyeredzi inonzi Sirius ndokubva afungidzira kuti ine shamwari yakavanzika. Edward Pickering akawana binary yokutanga ine spectroscopic muna 1899 paakacherechedza kupatsanuka kwenguva nenguva kwemitsetse yenyeredzi inonzi Mizar munguva yemazuva 104. Kucherekedza kwakadzama kwenzira dzakawanda dzenyeredzi mbiri kwakaunganidzwa nevazivi venyeredzi vakadai saFriedrich Georg Wilhelm von Struve naS. W. Burnham, vachibvumira kuti uwandu hwenyeredzi huzivikanwe kubva mukuverenga kwezvinhu zvinotenderera. Mhinduro yokutanga yedambudziko rokuwana nharaunda yenyeredzi mbiri kubva mukucherechedza kweteresikopu yakaitwa naFelix Savary muna 1827.  Mubvunzo: Bessl akawana rini shamwari yakavanzwa yenyeredzi Sirius?
Makore 1834