Space: 1999 is a British science-fiction television programme that ran for two series from 1975 to 1977. It was first telecast on Channel 7 Melbourne (Australia) commencing 28 July 1975. In the premiere episode, set in the year 1999, nuclear waste stored on the Moon's far side explodes, knocking the Moon out of orbit and sending it, and the 311 inhabitants of Moonbase Alpha, hurtling uncontrollably into space.
https://en.wikipedia.org/wiki/Space:_1999