"Encounter in the Dawn" is a short story by Arthur C. Clarke published in 1953 in the magazine Amazing Stories. It was originally collected in the anthology Expedition to Earth, and, in one edition of the book, is titled "Expedition to Earth". In a later collection the title "Encounter at Dawn" is used. The story was later restyled and used as the basis for the first section in Clarke's 2001 A Space Odyssey.
An editor at Ballantine Books gave it the ingenious title "Expedition to Earth" when it was published in the book of that name, but I prefer "Encounter in the Dawn." However, when Harcourt, Brace and World brought out my own selection of favourites, The Nine Billion Names of God, it was mysteriously changed to "Encounter at Dawn."
The star ship with three occupants lands on a planet, much like their own, some 100 000 light years away, on the rim of the Milky way. On the planet they encounter a race of bipedals much like themselves but on a much lower technological level. We learn that in the future this area will be called Babylon. All through the story there are no definite clues whether visitors or locals are the "real" humans. As they depart, a local muses on being the only one who had met the gods.