Universe

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Across
  1. 2. system it is built by eight planets and the sun
  2. 4. a long thing, wich flies in space
  3. 5. it is a star and it is shining
  4. 8. the power that pulls things towards the centre of the earth
  5. 10. you can see planets with it
Down
  1. 1. Aliens travel in it
  2. 2. stars
  3. 3. Beings that live in space
  4. 6. a planet next to the sun
  5. 7. year the distance that light can travel in one year
  6. 9. the first planet that was visited by humans