57 years ago, a Thursday, NBC aired the first episode of a new space show that would go on to transform society in ways big and small, inspire 11 spin-off series, several movie franchises and whole reams of novels, models, tie-ins and more.
It started as a pitch for " 'Wagon Train' to the stars" but became whole detailed fictional universes inspiring our own real one with a promise that we'll figure this all out and we'll be the better for it. That there's a whole universe out there.