Muna Chikumi 1846, paakaona Le Verrier's yekutanga yakaburitswa fungidziro yehupamhi hwepasi uye kufanana kwayo nekufungidzira kwaAdams, Airy akanyengetedza Challis kuti atsvage nyika. Challis akachera matenga zvisina maturo muna Nyamavhuvhu naGunyana. Zvichakadaro, Le Verrier netsamba akakurudzira muongorori weBerlin Observatory Johann Gottfried Galle kuti atsvage nemucherechedzi we observatory. Heinrich d'Arrest Adams, mudzidzi pa observatory, akakurudzira Galle kuti vaigona kuenzanisa chati ichangobva kudhonzwa yenzvimbo yaVerrrier yaifungidzirwa naLe Verrier nenzvimbo yazvino yekutsvaga denga renyeredzi, yakatariswa seyakagadziriswa kusvika pa184 °. Kubva muna Chikumi 1846, Airy akanyengetedza Challis kuti atsvage nyika.
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