Science reflection

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Across
  1. 2. furthest away planet from the sun.
  2. 6. the earth is in the middle of the solar system.
  3. 8. a natural example is a moon and there are artificial ones that are sent from earth.
  4. 10. and example of one of these is the Hubble.
Down
  1. 1. the motion that look like the planet mars is moving backwards but it is not.
  2. 3. ice and dust that follows highly elliptical orbits from far away planets to close to the sun.
  3. 4. sun is in the middle of the solar system.
  4. 5. who came up with the idea of the sun being in the middle of the solar system.
  5. 7. the closest planet to the sun
  6. 9. rocky objects in the sky