1. How does gravity work? (Broad terms is fine. It's actually a really difficult question to answer in a detailed way) 2. What keeps the air in around the eartth? 3. How far away is the moon and sun, and why do we have eclipses? 4. Why do you believe we haven't visited the moon? 5. Why do you believe we haven't visited space? 6. Why don't you believe in satellites (especially the ISS) 7. Why can't we see Polaris from the southern hemisphere. Linked to that, why CAN we see a point in space that correspondes to the southern celestial pole, that people in the northern hemisphere can't? 8. How do you explain ships going over the horizon? 9. The flat earth map makes a number of predictions about travel time to different places. These travel times don't match reality. Why not? 10. What are stars?
I realise this is an eclectic mixture of questions, but that's cool. Don't try to get too deep into them. Most only require simple answers.
