Space

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Across
  1. 4. the third planet from the sun
  2. 6. an object in orbit of an another object
  3. 7. the study of movements of celestial bodies interpreted as having an influence on human affairs and the natural world
  4. 8. spin on a axis
Down
  1. 1. a non contact force which acts on every object with mass
  2. 2. move in a circle around sun
  3. 3. the path a planet takes around the sun
  4. 5. study of space