Across
- 3. Person trained to travel in space
- 5. Group of stars that form a pattern in the night sky
- 8. Name of the closest star to the Earth
- 9. The force that keeps the moon in orbit around the Earth
- 10. Large ball of ice and rock that orbits the sun with a long tail
Down
- 1. The Earth's natural satellite
- 2. Largest planet in our solar system
- 4. Equipment used to see faraway objects such as planets
- 6. To move in a circle around a planet or star
- 7. It takes one ____ for the Earth to orbit the Sun once