Ka cika wannan magana: An yi manyan jayayya da yawa game da sararin samaniya a cikin tarihin ilimin sararin samaniya. Daya daga cikin na farko shi ne juyin juya halin Copernican, wanda ya kafa tsarin tsarin hasken rana. Kwanan nan ya kasance
Babban muhawara na 1920, bayan da aka kafa matsayin Milky Way a matsayin daya daga cikin taurari da yawa na duniya. Daga 1940s zuwa 1960s, an rarraba al'ummar astrophysical daidai tsakanin magoya bayan ka'idar Big Bang da magoya bayan wata duniya mai zaman kanta; wannan an yanke shawarar ƙarshe a cikin ka'idar Big Bang ta hanyar ci gaba a cikin nazarin sararin samaniya a ƙarshen 1960s. Duk da haka, har yanzu akwai masu sukar ka'idar Big Bang da suka hada da Fred Hoyle, Jayant Narlikar, Halton Arp, da Hannes Alfvén, wadanda aka ba da ilimin sararin samaniya a gefen binciken astronomical. Wasu 'yan adawa na Big Bang har yanzu suna aiki a yau sau da yawa suna yin watsi da tabbataccen shaida daga sabon bincike, kuma a sakamakon haka, a yau ba a buga ilimin sararin samaniya wanda ba ya yarda da Big Bang gaba ɗaya a cikin mujallolin kimiyya da aka sake dubawa amma suna bayyana akan layi a cikin mujallolin gefe da kuma shafukan yanar gizo masu zaman kansu.