Solar system II

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Across
  1. 2. black hole’s “crust”
  2. 4. interstellar day
  3. 5. a tailed star
  4. 6. can be found in the middle of the solar system
Down
  1. 1. black hole’s evil twin
  2. 3. The most common dwarf planet
  3. 5. meteor hole
  4. 7. A moon that’s almost the size of the dwarf planet it orbits