The Universe

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Across
  1. 1. Unit of measurement equivalent to 3.26 light years.
  2. 6. The scientist who suggested the Earth was the centre of the solar system.
  3. 8. Large rocks that orbit between Mars and Jupiter.
  4. 10. The main determining factor for the ending of a star.
  5. 12. Fuel source for stars.
  6. 14. Dwarf planet.
  7. 15. Earth’s natural satellite.
  8. 16. The largest planet in our solar system.
  9. 17. Made up of a number of galaxies and other celestial objects.
  10. 18. state Theory heavily supported by Albert Einstein.
  11. 19. The galaxy closest to ours.
Down
  1. 2. The planet famous for large rings.
  2. 3. Theory that suggests constant movement in more than one direction.
  3. 4. Most accepted theory.
  4. 5. The star in our solar system.
  5. 7. The first part of the star life cycle.
  6. 9. The only planet able to support life.
  7. 11. One of these may have killed the dinosaurs
  8. 13. The ending of a medium sized star.
  9. 15. Our galaxy.
  10. 20. The universe is predicted to be 13.7 _______ years old.