Planets

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Across
  1. 3. Neptune has supersonic______.
  2. 5. Venus doesn’t have any_____, and we aren’t sure why.
  3. 6. Mercury is ______, but not to hot for ice.
  4. 7. Uranus is more______than we thought.
Down
  1. 1. Mars had a thicker atmosphere in the______.
  2. 2. You can see Earth’s magnetic field at work during_________.
  3. 4. Jupiter is a great______catcher.
  4. 8. No one knows how______Saturn’s rings are.