Battlestar Galactica is a critically acclaimed science fiction television series that aired from 2004 to 2009. The show is set in a distant part of the galaxy where humans live on a group of twelve planets known as the Twelve Colonies. These colonies are threatened by a race of machines known as Cylons which they had previously created. The Cylons turn against humanity and launch a devastating attack, destroying most of the colony's ships and cities.
The only remaining military ship is the Galactica, one of the older ships in the fleet, which is commanded by Adama (Edward James Olmos) before he becomes the president of the fleet. The Galactica and a handful of other civilian ships escape the attack and embark on a journey through space to find a new home, known as Earth, while constantly pursued by the Cylons.
Along the way, the series explores themes of survival, religion, politics, and morality as the crew of the Galactica and the fleet struggle to survive and find a new home. The show has a large ensemble cast of characters, such as Starbuck (Katee Sackhoff), Apollo (Jamie Bamber), and Baltar (James Callis), each with their own backstory and motivations.
The show also features complex relationships between the humans and the Cylons, with some Cylons being sympathetic to humanity, while others are intent on wiping them out. The series is known for its gritty and realistic portrayal of space warfare, as well as its philosophical and ethical dilemmas. The show's complex plot culminated in a highly praised and controversial finale that left a lasting impact on its fans.