Earth movement

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Across
  1. 3. A scientist who studies space
  2. 7. An imaginary line around the middle of earth
  3. 9. Small, rocky objects that orbit the Sun.
Down
  1. 1. The earth's movement around its axis is called ________.
  2. 2. The smallest planet in our solar system.
  3. 4. The curved path the earth undertakes around the sun.
  4. 5. The earth's movement around the sun is called ________.
  5. 6. The largest planet in our solar system.
  6. 8. An imaginary line that goes through earth