Across
- 2. A meteoroid that has entered a planet's atmosphere
- 4. A collection of solar systems
- 6. A small body of rock which does not orbit
- 10. A collection of planets around a star
- 12. The study of the positions of celestial bodies to predict the future on earth
- 13. All matter and space as a whole
- 14. To go around
- 15. A small rock orbiting a star
- 16. A large body of rock or gas which orbits a star
Down
- 1. Orbits a star in an oval-shape; made of ice or something similar
- 2. A body of rock which orbits a planet
- 3. To spin
- 5. A collection of stars grouped together to make a picture
- 6. The fragments of rock left over when a meteor strikes a planet
- 7. The gas that surrounds a planet
- 8. The branch of science which deals with celestial objects, space and the physical universe as a whole.
- 9. A burning ball of hydrogen and helium
- 11. Our galaxy