Write a continuation for this paragraph - I mua i te taenga mai o te cosmology o nāianei, i reira i nui kōrero e pā ana ki te rahi me te āhua o te ao. I te tau 1920, ko te tautohetohe a Shapley ki a Curtis
i puta i waenganui i a Harlow Shapley me Heber D. Curtis mo tenei take. I tautohe a Shapley mo te ao iti e rite ana te rahi ki te Milky Way galaxy, a i tautohe a Curtis he nui ake te ao. I whakaotihia te take i roto i te tekau tau e whai ake nei me nga kitenga pai ake a Hubble.