Offical UAP(UFO) files(first link) and technical and scientific reports(second link) released by the NASA and by the military on their websites:
https://www.war.gov/UFO/
https://www.aaro.mil/UAP-Records/
Edit: EVE Online is a MMORPG set in fictional space with spaceships and aliens and such in it, so why not?
Interesting lights seen at Moon during Apollo 17 that resemble an Essassani UFO:
https://www.war.gov/UFO/#NASA-UAP-VM6-Apollo-17-1972
Apollo 12 with UAP objects at Moon’s grid.
https://www.war.gov/UFO/#NASA-UAP-VM5-Apollo-12-1969
NASA’s report about Unidentified Flying Objects in Classical Antiquity, hosted on NASA website: