Science fiction

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Across
  1. 3. famous robot book – I, ___ by Isaac Asimov
  2. 6. Time travel book – The Time ___ by H.G. Wells
  3. 7. Novel with giant sandworms – ___ by Frank Herbert
  4. 8. Wars A space book series by George Lucas
Down
  1. 1. The author of 1984 – George ___
  2. 2. Aliens attack Earth in The War of the __
  3. 4. Ender’s ___ – about a boy genius in space
  4. 5. The Hitchhiker’s Guide to the ___