Battlestar Galactica, or BSG, is a franchise of American science fiction films and television series , the first of which was produced in 1978. A series of book adaptations, original novels, comic books and video games have also been based on the concept. A re-imagined miniseries aired in 2003, with a regular television series starting in 2004.

All of the Battlestar Galactica productions share the same premise: In a distant part of the universe, a civilization of humans live on planets known as the Twelve Colonies. In the past, the Colonies have been at war with a cybernetic race known as the Cylons. With the help (knowing or unknowing) of a human named Baltar, the Cylons launch a sudden sneak attack on the Colonies, laying waste to the planets and devastating their populations. A few thousand of the human survivors flee into space aboard any spacecraft they can reach. Of all the Colonial Fleet, the Battlestar Galactica appears to be the only military ship that survived the attack. Under the leadership of famed military leader Commander Adama, the Battlestar Galactica and its crew take up the task of leading the ragtag fugitive fleet of survivors into space in search of a fabled refuge known as Earth.

Battlestar Galactica is an American science fiction television series, produced in 1978 by Glen Larson and starring Lorne Greene, Richard Hatch and Dirk Benedict.

The premise of the series takes themes from Chariots of the Gods and Mormon theology. The show lasted only one season in 1978–1979, but has since developed a cult following and several books have been written continuing the sagas of the characters, many co-authored by Hatch. After its cancellation, its story was continued in 1980 as Galactica 1980 with Adama, Lieutenant Boomer and Boxey/Troy being the only continuing characters.

It was "reimagined" in 2003 by the Sci-Fi Channel (see Battlestar Galactica (re-imagining)). The complete series recently aired on Sundays on ION Television from April 8, 2007 to June 24, 2007. It is currently airing on MeToo Chicago.

Battlestar Galactica is a three-hour miniseries written and produced by Ronald D. Moore and directed by Michael Rymer. It was the first part of the Battlestar Galactica reimagining based on the 1978 Battlestar Galactica television series, and served as a backdoor pilot for the 2004 television series. The miniseries originally aired on the Sci Fi Channel in the United States starting on December 8, 2003. The two parts of the miniseries earned, respectively, a 3.2 and 3.8 Nielsen rating, making the miniseries the third most-watched program on the Sci Fi Channel ever.

Battlestar Galactica is an Emmy Award winning science fiction television program created by Ronald D. Moore that first aired on October 18, 2004 in the United Kingdom and Ireland on Sky One, and January 14, 2005 in the United States on the Sci Fi Channel. Repeats of episodes have been shown in the United States on NBC, Bravo, and in high definition on Universal HD.

The introduction to the television series is a three-hour miniseries that aired from December 8–9, 2003, on the Sci Fi Channel. The series has gained a wide range of critical acclaim and has won Emmy, Peabody, Hugo, and Saturn awards.

The second war against the Cylons is over and The Twelve Colonies have been destroyed. Now Commander Adama of the Battlestar Galatica and President Laura Roslin lead a ragtag fleet of refugees in a supposed search for the fabled lost thirteenth colony, Earth. However, the dangers they face are many which compound an already difficult situation. In addition to the Cylons hunting and attacking the fleet in space, their infiltrator units carry out a more subtle plot even as their former unwitting pawn, Gaius Baltar, helps in the hunt for them while hiding both his own guilt and the strange presence that haunts his every thought. If that wasn't enough, the fleet also faces internal political conflict in which the rabble-rousing figure, Tom Zarek, is merely the loudest dissenting voice. In the midst of these trials however, clues begin to appear that suggest that Adama's simple bluff about Earth may be more truthful than anyone could have guessed. Written by Kenneth Chisholm (kchishol@rogers.com)

This short-lived TV series dealt with the adventures of a fleet of starships from an ancient civilization who are seeking a legendary lost colony known as Earth. It later spawned an even shorter-lived TV series, Galactica 1980. Written by Christopher E. Meadows

The human Colonial forces have agreed to peace with their mortal enemies the Robotic Cylons when a surprise attack destroys most of the Colonial Fleet. The remnants of the Colonials form up a "ragtag group of ships" on the surviving major ship, the Battlestar Galactica. They decide to go off in a search for the planet founded by missing tribe of the Colonials, a planet called earth as the Cylons continue to search for them. Written by John Vogel

The leaders of the twelve human colonies are making plans to sign a peace treaty with their mortal enemies, the Cylons. On the eve of the ceremony, the Cylons attack and destroy most of the colonies. The remaining Colonial ships, led by the battlestar Galactica under the command of Adama, head out into space and seek out a "lost" 13th colony, which turns out to be Earth. Along the way, the Colonials encounter various races (both friendly and hostile), the legendary human warrior Commander Cain, and the planet Kobol, the mother world of all the colonies. All the while, the Cylons--led by the human traitor, Baltar--are in hot pursuit... Written by Brian Barjenbruch

In a distant galaxy, twelve planets bearing tribes of the race known as Man have been at war with an alien cyborg race, the Cylon empire, for a millenium. In the measurements used by the Twelve Colonies it is the Yahren 7341, and a treaty of peace is to be signed - a treaty that proves to be a ruse for the largest assault in the history of galactic warfare. With their defending warships destroyed and their homeworld annihilated, the Twelve Tribes gather to their one remaining warship, a battlestar named the Galactica, boarding every assorted star vehicle that will carry them, as their leader, Commander Adama, seeks out the one planet that will protect Man from the predation of the Cylon Empire - a planet called Earth. As their journey proceeds this Fugitive Fleet is closely pursued by forces of the Cylon Empire under the command of human traitor Baltar. Written by Michael Daly (fanstp43@aol.com)