#DoctorWho ran first in 1963:
https://www.bbc.com/historyofthebbc/anniversaries/november/doctor-who-first-episode

#StarTrek began three years later:
https://www.startrek.com/article/star-trek-it-all-began-today-in-1966

#StarWars hit fourteen years later:
https://www.imdb.com/title/tt0076759/

Both owe a lot to these writers:
https://www.britannica.com/biography/Edgar-Rice-Burroughs
https://www.britannica.com/biography/H-G-Wells
https://www.britannica.com/biography/Philip-Nowlan

I just discovered this and wish I had time to waste my life on it:
https://www.roku.com/whats-on/tv-shows/doctor-who?id=ecee940e289b5b699754e0255f44d2d9