What's happening?

Space: 1999: 1x1

Breakaway

In September 1999, John Koenig reports to Earth’s Space Research Centre at Moonbase Alpha as its new commander. A strange sickness is killing some of the Moonbase Alpha crew. Commander Koenig’s investigation reveals that the source lies at Nuclear Waste Disposal Area 1 caused by excessive magnetic energy fields. The continuous build up of energy shortly causes massive explosion clusters that knocks the moon off orbit into deep space.

Space: 1999: Season 1 Episode 1
Sep. 04, 1975