The Doctor speaks with the alien captain and learns the astronauts sent to Earth were ambassadors.However, before he can alert the authorities he is kidnapped by Reegan.
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Control Room Assistant
Large unidentified object converting with Mars Probe 7 on collision course. Estimated speed seven thousand miles per hour, but decreasing.
Prof. Ralph Cornish
Doctor, a large unidentified object is approaching you on collision course. Take evasive action.