The Universe

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Across
  1. 3. Diagram used to organize stars based on heat and luminosity.
  2. 6. Caused by the time of the month and the gravitational pull of the moon.
  3. 9. Form of waves used to identify and search through space.
  4. 10. A vast swirling mass of solar systems and other space objects.
  5. 11. Form of waves that travel incredibly long distances.
Down
  1. 1. Giant ball of heat and gas.
  2. 2. Moderate, Low-range tide that occurs during the first and third quarter moon phases.
  3. 4. A large cloud of space dust and other materials.
  4. 5. Area where stars spend most of their life.
  5. 7. Small set of planets or celestial objects, usually containing a star at the center.
  6. 8. Extremely high tide that occurs twice a month during the new and full moon phases.
  7. 9. The galaxy that we live in.