The Earth and its neighbor

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Across
  1. 4. __________ of the earth on its axis causes day and night
  2. 6. earth's natural satellite is _______________
  3. 7. ____________ started a long sea journey from Spain
  4. 9. the sun, moon and stars are called _____________ bodies
  5. 10. the place where land and sea meet is called __________
Down
  1. 1. the sun and the eight planets form the __________ system.
  2. 2. earth is surrounded by a layer of air called ____________
  3. 3. the place where the sky and land or sea meet is called _______
  4. 5. ______________ do not have heat and light of their own
  5. 8. model of earth is called __________