Science

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Across
  1. 2. The path of an object in space as it moves around another object due to gravity
  2. 4. The name of our galaxy
  3. 8. Largest planet in our solar system
  4. 10. Only planet that we know of that has living life
  5. 11. The imaginary line which the Earth rotates on
  6. 12. A giant ball of gas
  7. 13. We can see the Moon completely illuminated
  8. 14. An object in orbit around a planet.
Down
  1. 1. This is a natural satellite
  2. 3. A group of millions of stars held together by their own gravity
  3. 5. A group of stars that form a pattern in the sky
  4. 6. Everything - space and all the matter and energy in it
  5. 7. The patterns of lit and unlit portions of the Moon as seen from Earth
  6. 9. Patterns of temperature changes caused by the position of the Earth's axis relative to the direction of sunlight
  7. 15. Total number of planets in the solar system