Tuhia he haere tonu mo tenei irava - Ko te tikanga o te aoiaoiao o te ao hou i tiimata mai i te tau 1917 me te whakaputanga a Albert Einstein mo tana whakarereketanga whakamutunga o te kaupapa whanaungatanga whanui i roto i te pepa "Cosmological Considerations of the General Theory of Relativity" (ahakoa kaore tenei pepa i te waatea i waho o Tiamana tae noa ki te mutunga o te Pakanga Tuatahi o te Ao). Na te pānga whānui i akiaki i ngā cosmogonists pēnei i a Willem de Sitter, Karl Schwarzschild, me Arthur Eddington ki te torotoro i ōna pānga ā-rorohiko, nāna i whakarei ake te āheinga o ngā tohunga ā-rorohiko ki te ako i ngā ahanoa tawhiti rawa. I tīmata ngā tohunga ahupūngao ki te whakarerekē i te whakaaro he tūpāpaku, he kore whakarerekē te Ao. I te tau 1922 ka whakauruhia e Alexander Friedmann te ariā o te ao whanui e mau ana i nga mea nekeneke. I te wā kotahi (1917 ki te 1922) te Kōrerorero Nui
i puta, me nga kairangahau o mua penei i a Heber Curtis me Ernst Öpik i whakatau ko etahi nebulae i kitea i roto i nga telescopes he tupuni motuhake e tawhiti atu ana i a tatou.