Across
- 1. a building where scientists can watch the stars
- 3. a very large group of stars and planets
- 7. the big object that shines in the sky at night
- 8. a piece of rock from space that hits the earth’s surface
- 9. system the sun and the planets that move around the sun
- 10. a piece
Down
- 2. a vehicle that travels in space
- 4. a small rocky body that goes around the sun
- 5. the collection of all galaxies
- 6. a mass of ice and dust