Space knowledge

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Across
  1. 4. The smallest star in the universe.
  2. 5. The biggest star in the universe.
  3. 7. How far Proxima-Centauri is from Earth. (in light years)
Down
  1. 1. The biggest black hole in the universe.
  2. 2. Biggest planet in our solar system.
  3. 3. A moon of mars.
  4. 6. The 2nd biggest black hole in the universe.