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What do you know?
  1. Explain how Xena and Pluto are similar to each other. How are they different from each other? (See answer)
  2. Why is Xena so bright?
    (See answer)
  3. If Xena were half as reflective, do you think astronomers would have found this icy body? (See answer)
  4. Do you think Xena should be classified as a planet? Why or why not? (See answer)