WHERE ARE THEY NOW: The cast of 'Star Trek: The Original Series'

Of the three main cast-members, William Shatner is the last one alive.CBS/Getty Images

• There has been some form of "Star Trek" in our lives since 1966, when "Star Trek" premiered its very first episode on September 8.
• Over the last 50-plus years, the stars of the original series have remained sci-fi icons, especially to all the Trekkies out there.
• Here's where all nine stars from "Star Trek: The Original Series" are up to now. Only four are still alive.

As Spock might've said, the cast of "Star Trek: The Original Series," all lived long and prospered. Four of the stars are still alive today, all in their eighties — William Shatner is pushing 90 — and those that died lived into their seventies and eighties as well.

We've taken a look back at the pivotal show, and the careers of these TV pioneers, and paid respects to those that aren't with us anymore.

Keep scrolling to see what the cast of "Star Trek" has accomplished in the last 54 years.