Tilloo had managed to take away his father's security card when he was having a sleep and entered the forbidden passage.
Tilloo wishes to see the sun if it was day and darkness if it was night.
Tilloo’s father gave advise to him not to reach the surface of the planet because of thin air and freezing temperature on the surface of the planet.
The suns position was minutely changed which caused disturbance in the natural balance. Bird extinction occurs then animals followed and people were forced to live underground.
It was because they saw a spacecraft which was approaching towards their planet.
The spacecraft was unmanned. We know this, we have sent unmanned spacecraft so far on the Mars.
Number One and Two suggest that they should persist passive and should not show the signs of life on this planet.
The mechanical hand was trying to take some samples of the martian soil for the evidence of life there.
The mechanical hand of the spacecraft had been completely damaged.