Clone of Discovering Mars

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Across
  1. 4. a large bowl shaped cavity in the ground
  2. 6. regions where the magnet is strongest
  3. 7. the end of an event
  4. 8. round and solid figure
  5. 9. the path of an object around a point in space
  6. 11. related to outer space
Down
  1. 1. an expert or student of astronomy
  2. 2. unusually large
  3. 3. a hole shaped like a bowl
  4. 5. the layer of gas that surrounds earth
  5. 8. to provide what is needed to live
  6. 10. the lowest or bottom part of something