mysterious ufo in the night sky. sci-fi spacecraft

activity advanced aircraft alien anomaly astounding astronomical atmosphere celestial civilization close comprehension cosmic craft discovery eerie encounter enigmatic entity event exploration extraterrestrial flying forces futuristic galactic haunting intelligence intergalactic interplanetary interstellar intriguing lights mysterious mystery mystifying night object occurrence otherdimensional otherworldly paranormal phenomenon presence scene scifi sighting sky spacecraft spooky strange supernatural surreal technology territory travel ufo uncanny uncharted uncon unearthly unexplained unfathomable unidentified unknown unseen visitation