Space

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Across
  1. 3. when the sun is covered by the moon
  2. 4. speed with a direction
  3. 6. an invisible force which attracts a body to another body with larger mass
Down
  1. 1. phase of the moon where it is fully lit
  2. 2. phase of the moon where only a small slice is shown
  3. 5. the planet with water