THE UNIVERSE

1. Why Do We Study Space

2. What is a Telescope

3. What is a Spectroscope

4. How do Astronomers measure distances

5. What is parallax

6. How does a rocket move

7. What are satellites and space probes

8. What is a space shuttle

9. How do humans survive in space

10. What are the Earth_s motions

11. What causes day and night

12. What are time zones

13. How does the earth orbit the sun

14. What causes the change of seasons

15. What is known about Earth_s moon

16. Why can we see only one side of the moon

17. What are the phases of the moon

18. What is a solar eclipse

19. What is a lunar Eclipse

20. What causes tides

21. What is the Solar System

22. What are the features of the sun

23. What are the inner planets

24. What are the outer planets

25. What are stars

26. How do stars get their energy

27. What are Constellations

28. What are galaxies