"Earthbound" is the fourteenth episode of the first series of Space: 1999. The screenplay was written by Anthony Terpiloff; the director was Charles Crichton. The final shooting script is undated. Live-action filming took place Friday 15 March 1974 through Monday 1 April 1974. Story Gerald Simmonds, former executive of the World Space Commission, stands at a window in John Koenig's office, staring into space. Ignoring the proceedings of the weekly command conference he attends, the politician broods over his current situation: hurtling through space on the runaway Moon, trapped when the atomic explosion of September 13, 1999 rocketed them out of Earth orbit. Unwilling to accept life on Alpha, the Commissioner is disliked by the entire community. Worse, he still behaves like a visiting dignitary, though bereft of any true authority. As the meeting adjourns, Simmonds turns from the window and without warning lambastes the senior executives, expressing his disgust at their complacent attitude. Rather than congratulating themselves on how well everyone is coming to terms with life in space, Simmonds insists they should focus on locating and returning to Earth. Koenig refuses to encourage false hope for a task that is scientifically impossible. Simmonds rebuts that, in his experience as a politician, he has observed the 'impossible' takes just a little longer. The debate is interrupted by a call from Main Mission; an unidentified powered object is approaching the Moon. Computer confirms the vehicle is manned—and on course to enter into an orbit which will carry it directly over Moonbase Alpha. With no reply to their hailing signals, Koenig deploys Eagles One and Two to intercept the alien craft. As they approach, Alan Carter notes that the spacecraft's flight vector is unstable. Rather than achieving orbit, it tumbles toward the Moon surface. At the last moment, landing rockets fire and the vessel softly impacts a short distance from the Moonbase perimeter. Rejecting Simmonds' attempt to accompany them, Koenig and the crash unit fly to the alien ship. Rescue Eagle Seven touches down next to the silent vessel, docking at what appears to be an entry hatch. Due to the hull's dense molecular structure, Victor Bergman's instruments can gather little information. The team manages to locate and trigger the hatch's opening mechanism and cautiously enter the dimly-lit interior. Surrounding a central column are six free-standing transparent caskets—each containing a motionless humanoid form. The occupants appear to be in a state