The
Star Trek series was somewhat successful on television. NBC (the National Broadcasting Company) originally ran the series, and clashed with Gene Roddenberry, the creator, over how the show should be portrayed, as well as having a racially diverse crew--Roddenberry wanted a racially diverse crew, NBC didn't. Eventually, NBC cancelled the series.
But the series was so popular with a hard core of fans, that motions picures were made based on the original television series. These motion pictures were so successful that a new television program was created--
Star Trek: The Next Generation, which was more like the show Roddenberry had always wanted. Three more spin-off series were produced. A spin-off is a show which is created from another successful program. These were
Star Trek Voyager (the original starship was a naval vessel, a warship--the voyager was an exploration ship),
Star Trek: Deep Space Nine, which was about a space station near a "worm hole" (don't ask) and
Enterprise.
The original Captain James Tiberius Kirk was played by a Canadian actor, William Shatner--who is arguably the world's most famous and sucessful bad actor. He really over-acted, he "hammed it up," as one says in English.
This is what William Shatner looked like in 1966:
This is what he looked like in the motions pictures, made over a 12 year period:
The second television series,
Star Trek: The Next Generation was also very popular, and more motion pictures were made from that series. In total, motion pictures have been made on the Star Trek theme for 30 years. The highly successful Next Generation series and motion pictures featured Patrick Stewart as Captain Jean-Luc Picard. In that series, there wasn't the embarrassing over-acting in which William Shatner indulged, and
Enterprise was run more like an actual naval vessel. This is the actor Patrick Stewart in his role as Jean-Luc Picard: