Irwin Allen Wiki

Humans, also called Earthlings or Terrestrials, are a spacefaring intelligent species that originated on the planet Earth.

Lost in Space[]

By 1982, Human technology had advanced to the point that personal interplanetary flight was possible. ("Welcome Stranger") It was likely by this time at the latest that official first contact with extraterrestrial life was made.

By 1997, Humans faced overpopulation of Earth, and therefore planned colonization of a planet in the Alpha Centauri system. ("The Reluctant Stowaway")