Battlestar Galactica - Season 1 - Eps 19: Experiment in Terra
Apollo and Starbuck follow the escaped Eastern Alliance ship back to Terra, where they help the Terrans overcome a nuclear holocaust, with the help of the race of white lights that had earlier helped them defeat Count Iblis.
About Battlestar Galactica

Title: Battlestar Galactica
First Air Date: 1978-09-17
Last Air Date: 1979-04-29
Status: Ended
Rating: 7.1/10 (from 243 votes)
Language: EN
Seasons: 1
Total Episodes: 21
Network: ABC
Genres: Sci-Fi & Fantasy, Drama
Production Companies: Universal Television, Glen A. Larson Productions
Synopsis
When the 12 Colonies of Man are wiped out by a cybernetic race called the Cylons, Commander Adama and the crew of the battlestar Galactica lead a ragtag fleet of human survivors in search of a "mythical planet" called Earth.
Cast

Lorne Greene
Commander Adama

Dirk Benedict
Lt. Starbuck

Richard Hatch
Capt. Apollo

Maren Jensen
Lt. Athena

Herbert Jefferson Jr.
Lt. Boomer

Terry Carter
Colonel Tigh

Noah Hathaway
Boxey

Tony Swartz
Flight Sargeant Jolly

John Colicos
Count Baltar

Laurette Spang
Cassiopeia