Odyssey 5

A TV show aired between 2002 and 2004, Odyssey 5 is about the adventures of the five surviving Odyssey crew members who, after witnessing the explosion of Earth during their mission which left them stranded in space, are unexpectedly rescued by a friendly alien entity who sends them five years into the past to find a way to change the future. The script is full of action, drama, and even comedy but the tour de force of this storyline is really the characters slowly realizing that by changing some facts in the past with the purpose to help somebody or to achieve the ultimate goal of saving Earth (whose demise they already know of), they're also touching on many other variables therefore leading to surprising and unwanted consequences that would not have taken place five years later. The show unfortunately ended on a cliffhanger and avid fans are still waiting anxiously to learn about the fates of those beloved characters while resigned to watching other excellent sci-fi shows.