1. What makes it the second smallest planet in our solar system?

2. What did the early Roman sky watchers name it after?

3. What is Mercury's highest surface temperature?

4.How long is a day on Mercury?

5. What is Mercury 's thin atmosphere made up of?

6. What is Mercury made of?

7. Why is Mercury a world of extremes?

8. How long does Mercury take to orbit the Sun?

9. How many moons does Mercury have?

10. What does NASA plan to do in the year 2004?

11. What has it been blown away by?

12.What does Mercury look a lot like?