Kinda a cool idea in a Stargate-y, Ancient Astronauts kinda way. It could easily be the origin of a story of the first interstellar star-ship from Earth travel

Kinda a cool idea in a Stargate-y, Ancient Astronauts kinda way. It could easily be the origin of a story of the first interstellar star-ship from Earth traveling across the cosmos, only to reach a planet already inhabited by a human civilisation. (This would presume that knowledge of the traveler world was lost at some point)