|'Space 1999 Episode|
|Previous Episode Produced||Matter of Life and Death|
|Next Episode Produced||Ring Around the Moon|
|Previous Episode||Mission of the Darians|
|Next Episode||The Guardian of Peri|
The moon is approaching a black hole. Professor Bergman is a able to rig up an energy shield around the Moonbase, but Commander Koenig feels this is only a desperate measure and has an eagle with six personnel dispatched as the rest of the Moonbase awaits certain death.