Across
- 2. a scientist who studies the universe beyond Earth
- 3. a ball of ice and dust
- 5. giants the name given to the four outer planets (2words)
- 6. study of the moon, stars and other objects in space
- 7. belief that all things in space revolved around the Sun
- 11. any object that revolves around another object in space
- 12. belief that all things in space revolved around Earth
Down
- 1. planets name given to the four inner planets
- 2. objects that revolve around the sun but too small to be planets
- 4. a meteoroid that has hit Earth's surface
- 8. the path of an object as it revolves around another
- 9. belt the region of the solar system between Mars and Jupiter where many asteroid are found
- 10. a chunk of rock or dust in space