1. Have you thoroughly read chapter 8?

2. What is the speed of light in meters per second (round numbers)?

3. What do sound waves need that light waves don't?

4. Extrapolations of the statistics of double stars suggests that almost all single stars like our Sun should have what?

5. What is the the two-word name of the theory that Einstein published in 1905 which ties space and time together?

6. When an object is moving away from you very fast, its light is shifted in wavelength making it look more ______ . (hint: a color)

7. Special relativity doesn't allow any matter or information to travel faster than what?

8. Name some proposed designs for starships mentioned in the book.

9. Which great painter also designed some flying machines in the1500's?

10. Will the constellations all look like they do now in 10,000 years?