"The crew is frozen in suspended animation for the five-and-a-half year voyage to a known habitable planet of
Alpha Centauri, on which they are to found a colony.
The ship is lost in space due to sabotage by an enemy agent, Dr. Zachary Smith, who is trapped aboard the ship at launch. Hurtling on into deep space, the Jupiter 2 crash lands on an unknown planet.
Although remote, this lost world soon becomes a stopping-off point for practically every space-traveling alien or monster in the galaxy, each episode seeing the arrival of some new visitor.[4]"
https://en.wikipedia.org/wiki/Alpha_Centauri_in_fiction#Film_and_television
__________________________________________
__________________________________________
Although unlikely, were a modern civilization found living on a planet orbiting Proxima Centauri, its proximity makes it a reasonable possibility that humanity could communicate with them. Earth: hello there!
[eight years later]
Proxima Centauri: Who's this?
[eight years later]
Earth: We are Earthlings!
[eight years later]
Proxima Centauri: Who?
[eight years later]
Earth: Earthlings!!
[eight years later]
etc, etc, etc
Thrilling communications!
