 Xigashada Sawirka, Enrique Alvarez Rob McCallum, oo ka mid ah dadka aasaasay howlgalka cilmibaarista, kana mid ah khubaradii qabanqaabisay safarka badda salkeeda lagu tagay, ayaa sheegay Dr Sullivan ay tahay qof si weyn ugu dooda xuquuqda badaha caalamka. 