1. List the planets in the solar system in their order from the sun beginning with the planet closest to the sun.

2. Describe the sun.

3. Why is the sun important to us?

4. How long does it take for the earth to orbit the sun?

5. What is the earth’s satellite called and how far from earth is it?

6. How do stars differ from planets? Look up "star" and "planet" in the Astronomy Dictionary.

7. What are constellations? Name a well-known constellation.

8. What is a “black hole?”

9. Could there be life as we know it on Mars? Why or why not. Click on "Mars."

10. What would you weigh on the planet Jupiter?

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