Planets! :)

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Across
  1. 3. Which planet became a dwarf planet in 2006?
  2. 6. which planet is the coldest in our solar system?
Down
  1. 1. which galaxy has a blackhole in it's centre?
  2. 2. Which planet has the most moons?
  3. 4. Which planet has the longest day?
  4. 5. True or false : Mercury is a terrestrial planet.