The first-ever American-made science fiction television series, Captain Video And His Video Rangers, debuts on the DuMont Television Network. Originated live from a studio in New York City, the series is aimed squarely at younger viewers, but in years to come the show will enjoy scripts written by such science fiction luminaries as Isaac Asimov, Arthur C. Clarke, Jack Vance, Robert Sheckley, and James Blish. The series runs five nights a week for six years.

The A.C. Nielsen Company publishes its first-ever television ratings in the United States, compiling data collected over a “sweep month” running from early April through early May of 1950. The top TV program at the time, according to Nielsen’s data gathering, is Milton Berle’s Texaco Star Theater. The Nielsen ratings and data collection methodology will attract controversy for decades to come, and will spell doom for many shows with small but loyal followings.
The first episode of ABC’s science fiction anthology series, Tales Of Tomorrow, premieres on ABC, with each episode’s opening titles proclaiming that the series is produced “in cooperation with the Science-Fiction League of America”, a collective of sci-fi writers including Isaac Asimov and Theodore Sturgeon among its members. This episode, written by Sturgeon himself, stars Lon McCallister and Martin Brandt.