space

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Across
  1. 6. used to calculate the force or pull of gravity of the planets in-universe
  2. 8. a tendency to do something without having changing the mind
Down
  1. 1. when a object is moving in a course
  2. 2. a curved path an object takes in space
  3. 3. how heavy or light a object is
  4. 4. the force that attracts a body toward the center of the earth, or toward any other physical object that obtains mass.
  5. 5. a coherent, typically body of matter with no exact shape
  6. 7. how for or close an object is to another object or person