Universe

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Across
  1. 2. the proper planet to jupiter
  2. 3. the biggest planet of the solar system
  3. 5. how it's named the black hole of the center of milky way
  4. 6. what is the earlier galaxy to milky way
Down
  1. 1. nearest star to the solar system
  2. 4. third planet of the solar system
  3. 5. what is our star