1. Do you think there is life on other planets in our solar system? Explain your answer.
2. Which do you think is more likely: humans visiting an alien planet or aliens from another planet visiting us?
3. Do you think humans should try to set up a colony on Mars? Why or why not?
4. If humans moved to another planet or to a moon, what sort of special equipment would be necessary for survival?
5. If you had the opportunity to live on another planet, but you wouldn't be able to get back to Earth for 10 years, would you do it? Why or why not?