tātai arorangi
1. (noun) astronomy, knowledge of celestial bodies.
(Te Kōhure Textbook (Ed. 2): 165-180;)
E kite ana ahau ko koe te tohunga kōkōrangi o 'Te Toa Takitini', kei a koe te wānanga o te tātai arorangi, te oha a ngā kauwheke o raurangi (TTT 1/6/1922:13). / I can see that you are the astronomer of 'Te Toa Takitini' newspaper and you have the knowledge of the heavens, the gift of the ancestors of another time.