When James Corry and Alicia are looking at the stars, Alicia sees a space ship moving across the sky. A moment later the ship is shown moving in the exact same spot, crossing in front of one star and moving below two bright ones.
When Corry puts his hand on Allenby's shoulder, he puts his hand high up near the neck. A moment later in a different camera angle, his hand is lower near Allenby's shoulder.
According to the narration, the entire story takes place on an asteroid. Asteroids are neither large enough nor stable enough to hold an atmosphere.
There is occasional evidence of a strong breeze blowing throughout the episode. Lacking an atmosphere, an asteroid would not have weather conditions.
Apparently, there was at least one other living thing on the planet besides James Corry. In the final screen shot, a bird can be seen flying in from the left, going to the right and circling up and over to the left again.
At 12:34 the phonograph tone arm is not touching the record, yet music is heard.
The narrator tells us that the inmate is "on an asteroid 9 million miles from the Earth." The nearest asteroids are in the Asteroid Belt, which is over 200 million miles from Earth. Small asteroids with eccentric orbits do sometimes travel closer to Earth, but at most they're just a couple miles in diameter (nothing like the "6,000 miles from north to south" dimensions of the asteroid prison).
There's no explanation of whether or not Corry hid Alicia during the previous few times that Allenby and his two crew members delivered supplies since the robot was supposed to be kept secret. The two seemed surprised at the end to find out that she existed.