Space

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Across
  1. 3. the path taken around the sun
  2. 4. a vehicel designed to fly into outer space
  3. 6. a fixed point night sky, like the sun
  4. 7. moves in a circle around the axis
Down
  1. 1. the planet with life
  2. 2. affects all things with mass
  3. 4. shines bright over planets
  4. 5. the laylers of gases surrounding the planets