The answer requires a little background. First, there were really two "Earths". The first Earth was mentioned in the mythology of the 12 Colonies. While the 12 colonies left the planet Kobol to settle the 12 planets (Caprica, Geminon, etc.), "Earth" was the destination of the 13th "Lost" colony. It was this "Earth" that the people of Battlestar Galactica found, but unfortunately, the inhabitants of this Earth had a catastrophic nuclear war that completely devastated the planet.
Fortunately, the location of a different Earth was known by a Starbuck's father. While several good explanations as to why he knew this information have been put forward, regardless he taught the FTL coordinates to Starbuck in the form of a melody. In the final episode, when instructed by Adama to enter coordinates for a "blind" FTL jump, Starbuck entered the mathematical equivalent of the notes of the melody. The resulting jump put them close to a planet already inhabited with primitive humans (as it turns out, our own primitive ancestors). Adama names this unknown planet Earth.
The humans from Battlestar Galactica discovered the ruins of ancient Earth, realizing they were the ancestors of humanity. The survivors integrated with the early humans and evolved over thousands of years, leading to the creation of the current human race. This time loop revealed that they had always been destined to end up on Earth.
The 13th colony on Battlestar Galactica is called Earth. It is the final destination sought by the human survivors in their search for a new home after the destruction of their original planets. Earth is revealed to be a distant planet that is eventually found by the characters in the series.
At the end of Battlestar Galactica, it is revealed that the main characters find a habitable planet to settle on and begin a new civilization. The show ends with them starting fresh and moving on from their past struggles.
Battlestar Galactica - 1978 Greetings from Earth 1-17 was released on: USA: 25 February 1979 West Germany: 21 June 1989 (part 1) West Germany: 28 June 1989 (part 2) Hungary: 9 June 2009
There are over 100 billion galaxies (with 100 billion+ stars (each containing 9 planets and 170+ moons)) in each one; as well as asteroid belts and nebulae) in the Battlestar Galactica universe. Their light has taken 13 billion years to reach Earth.
After discovering the true Planet Earth at the coordinates that Galactica jumped to (after the final battle with the Cylons at their last stronghold), the Colonials settled there. Turning their backs on the technologies that led to the creation of their greatest enemies (the Cylons), they sent all of their ships into our Earth's Sun on autopilot, with Galactica piloted by Starbuck's husband, 150,000 years ago.
At the end of the "Battlestar Galactica" series, approximately 39,192 survivors are left. These survivors find a new home on Earth after a long and tumultuous journey through space, seeking refuge from the Cylons.
Galactica Discovers Earth was created on 1980-01-27.
"Frak" is used in Battlestar Galactica as a replacement for the expletive "fuck." It was created as a way to bypass network censors while still conveying strong emotion or emphasis. The term became popular among fans of the show and is now closely associated with the series.
Galactica 1980 - 1980 Galactica Discovers Earth Part 1 1-1 was released on: USA: 27 January 1980 Netherlands: 3 April 1982 West Germany: 16 August 1989 Hungary: 7 September 2010
Galactica 1980 - 1980 Galactica Discovers Earth Part 2 1-2 was released on: USA: 3 February 1980 Netherlands: 16 April 1982 West Germany: 23 August 1989 Hungary: 9 August 2010
They relate in using the same premise - of twelve worlds of humankind forced to flee to space under the protection of the titular warship in order to find a lost colony of Man, known as Earth. The character names are the same, albiet in completely different contexts.
Nick Holt has: Played Thief in "Barney Miller" in 1974. Played Jake in "Invasion from Inner Earth" in 1974. Played Frankie in "Starsky and Hutch" in 1975. Played Tom Westerly in "The Next Step Beyond" in 1978. Played Charka in "Battlestar Galactica" in 1978.