National Science Fiction Day

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Across
  1. 2. Solar
  2. 3. Wormhole
  3. 4. Spacecraft
  4. 5. Galactic
  5. 6. Telescope
Down
  1. 1. Exoplanet
  2. 2. Expedition
  3. 3. Plasma
  4. 4. Android
  5. 5. Gravity