Breakaway

Moonbase Alpha is a science fiction series set in the year 1999, when a nuclear waste explosion on the far side of the moon sends the lunar base and its crew out of Earth's orbit and into a journey across the solar system. Episode 1, Breakaway, introduces the main characters and the premise of the show, as Commander John Koenig arrives at Moonbase Alpha to investigate the mysterious deaths of the astronauts working on the nuclear waste disposal area. He soon discovers that the nuclear waste is unstable and could cause a massive chain reaction that would destroy the moon and endanger the Earth. He decides to evacuate the base, but it is too late. The explosion propels the moon out of orbit, leaving the 311 survivors stranded in space with no way to return home.