Across
- 1. What is our galaxy called?
- 3. How many moons does Jupiter have?
- 5. How many billion years old is the Earth?
- 6. What is the biggest planet in our solar system?
- 7. What is the biggest star in out solar system?
Down
- 2. How do you calculate distance between stars, planets, and galaxies?
- 4. How many countries have successfully landed on the moon?
- 8. Is Pluto a planet in our solar system?