What is considered the first SF tv series that lasted a season?

What is considered the first SF TV series that lasted at least a season?
Was it Twilight Zone or One Door Beyond (?)?
Was there even a nonanthology SF series that lasted a season pre1960?
Well if there were nonanthology SF series pre1960 they obviously ended
up in the dustbin of TV history and probably for a reason.

Gerry...

Space Patrol early 1950-1955, on ABC Saturday morning schedule
1951-1952. Commander Buzz Corey, Cadet Happy, Carol Karlyle, Tonga,
Major Robbie Roberston, Sec. Gen. of the United Planets, Mr. Proteus,
and Price Baccarratt, alias the Black Falcon were some of the
characters.

To some, better known for its radio version.

Michael Bowker...

the free encyclopedia.

Captain Video was 1949 - 1955

free encyclopedia.

Tom Corbett was 1950 to 1955 (Before Star Trek, Tom Corbett — Space
Cadet was the most scientifically accurate series on television).

Both predate twilight zone and one step beyond.

There may be others, those are just two I can pull off the top of my head.