flying saucer hovering over earth in world ufo day,

aerial alien anomalous awareness banner cartoon celebration commemorating commemoration cosmos day earth extraterrestrial fiction float flying holiday hover hovering illustration inviting join july mystery object observation outline overflying phenomena planet poster reminder saturnshaped saucer science shape ship sighting sightings sign silhouette spacecraft spaceship stars technology telescope typography uap ufo ufology unexplained unidentified unknown vector vehicle visitor world