Space And The Origin Of The Universe - Revision

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Across
  1. 1. One theory for the formation of the universe is called the Big _ _ _ _
  2. 6. A natural satellite of a planet
  3. 9. A small rocky body in space
  4. 11. This prefix means 'relating to the Sun'
  5. 12. An object orbiting a celestial body of a large mass
  6. 13. A danger can also be called a h _ _ _ _ _
Down
  1. 2. This word describes a universe with the Earth at its centre.
  2. 3. A celestial body made of ice and dust with a trail
  3. 4. A mass of gas held together by its own gravity that generates its own light and heat
  4. 5. This word describes a universe with the Sun at its centre
  5. 7. A force of attraction between two bodies
  6. 8. A celestial body that is in orbit around a star
  7. 10. This three-letter prefix means 'relating to the Earth'