Source of the Amazon River the Mantaro. Explorers and scholars have identified each of the three rivers as being the source of the Amazon under one of the three definitions. The Mantaro is the most distant upstream point; the Maraňón is the main stem of the Amazon; and the Apurímac is the most distant source with an uninterrupted flow of water. The Amazon River is the largest river in the world in terms of its discharge into the Atlantic Ocean and either the longest or second longest river in the world, contending with the Nile River for that honor. More than from its mouth, upstream
The Longest Voyage The Longest Voyage "The Longest Voyage" is a science fiction short story by American writer Poul Anderson. It won the Hugo Award for Best Short Story in 1961. On a distant world the age of exploration is beginning. A party of daring explorers attempts to circumnavigate their world. In unknown waters they encounter an island civilization which claims to have a prophet who fell from the stars. "The Longest Voyage" won the 1961 Hugo Award for Best Short Story. Gardner Dozois, upon selecting "The Longest Voyage" for inclusion in his 2000 anthology "Explorers: SF Adventures to Far Horizons", said that