Across
- 3. What means "related to the moon"?
- 4. Where do many scientists believe humans should eventually live?
- 7. How are the sun's rays on the moon's surface?
- 9. When might we see lunar cities or new human cultures on other planets?
- 10. What could we eventually create on other planets?
- 14. What could people traveling long distances in space face?
- 15. What would people have to do most of the time on the moon?
- 17. Which planet does Elon Musk want to colonize?
- 18. How many people does Elon Musk want to send to Mars?
Down
- 1. Who thinks humans should colonize Mars?
- 2. What did Stephen Hawking believe would make our future safe?
- 4. What will prepare humans to visit and live on Mars?
- 5. What did Stephen Hawking believe humans would need to do in space?
- 6. What does Elon Musk want to do on Mars?
- 8. What is one of the concerns about sending humans into space?
- 11. How long could a one-way trip to Mars take?
- 12. Who believed that humans should colonize space?
- 13. What could we make in the fields of science, technology, medicine, and health?
- 16. What are narrow beams of light from the sun?
- 17. Earth's closest neighbor?