The translated ancient document that was found in Near East reveals this passage.
"The act of operating and controlling the flying machine of the Starmen is great and amazing. The gift of wisdom of flight is the most ancient and foremost of importance of our heritages. This is a gift from Heavenly Comer who fell on our land from above. They gifted us with this knowledge as a means of saving many lives in our land when disaster fell on us."
These ancient passage tells us that Spacemen had visited the Earth thousand of years before our generation.
Source: Hakaltha; Ancient laws of Babylon. 7,000 B.C.