Alien buffs and extreme audiophiles: both are believers without scientific evidence? (let me pause my 32kbit/s real-media recording of Art Bell that I'm listening to on my low-oxygen, helix braided USB-cabled headset).
X-Files, H R Giger's derived Alien franchise, Predator, Contact, Carl Sagan, Star Wars, 90s Star Trek, and the DOS sci-fi greats like XCom, Nomad, StarFlight, StarFleet, Supremacy/Overlord, and Star Control.
The universe is so vast that exponential advancements are needed to move from continent-faring, to solar-system faring (we're not there yet, hoping to see Elon do it in this lifetime), to interestellar-faring.
I hope we or other space faring species meet up one day; would make for a much less lonely universe! The fact our universe is and will be forever expanding makes the challenge even harder...