The day we built 2

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Across
  1. 4. relating to or caused by the force that attracts objects in space towards each other, and that on the earth pulls them towards the centre of the planet
  2. 5. to be strong enough not to be hurt or damaged by extreme conditions, the use of force,
  3. 7. one part of something larger
  4. 9. to make something less or smaller in size, quantity, price, etc.
Down
  1. 1. placed
  2. 2. to a fairly large degree, especially in comparison to something else
  3. 3. not unusual or different in any way
  4. 6. a type of literature that describes imaginary people and events, not real ones
  5. 8. arrives at the place that one has been travelling to