Stephen Hawking

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Across
  1. 1. Milky Way, for example
  2. 3. Space gas clouds
  3. 6. Dust and ice object in space
  4. 8. Used in science and physics
  5. 9. All of existence
Down
  1. 1. Pulls things to Earth
  2. 2. Sound reasoning
  3. 4. Happening at a specific time
  4. 5. A harmonious universe
  5. 7. Device used for mobility