How does Tilloo manage to find his way to the 'forbidden passage'?
What did Tilloo hope to see once he emerged from his underground home?
Why did Tilloo's father advise him not to try to reach the surface of the planet?
What changes had occurred, which forced people to live in underground homes?
Why was everyone in the Control Room greatly excited?
Was the spacecraft manned or unmanned? How do you know it?
What did Number One and Number Two suggest should be done about the alien spacecraft?
What do you think the mechanical hand was trying to do?
Tilloo pressed the red button and "the damage was done". What was the damage?
Where had the spacecraft come from?
On which planet do Tilloo and his parents live?
If you had to live in a home like Tilloo’s what parts of life would you find most difficult? What compensations might there be?
What, if anything might drive mankind to make their homes underground?
Do you think there is life one other planets? Can you guess what kind of people there may be on them? In what ways are they likely to be different from us.
