Earth's Rotation

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Across
  1. 2. Shapes made out of stars in the sky
  2. 4. When planets go around the sun
  3. 6. This is what the sun is
  4. 8. Formed 4.6 billion years ago
Down
  1. 1. This takes 365.24 days
  2. 3. Imaginary line the Earth spins on
  3. 5. Without it everything would float
  4. 7. Another word for spin