    Sentence + What Present is  credited with the original notion of  putting Americans in space?    Sentence 2 First conceived during  Dwight D. Gisenhowers  3 a three-man  spacetcratt to follow the one-man  Project Mercury whith put the first  Americans in space. Kpollo was  later dedicated to President John F.  Kennedys national goal of landing 3  man on the Moon and returning him  Safely to the arth by the end of the  19608, Which he proposed in a May  25. 1961, address to Congress.    