Space System

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Across
  1. 3. this is a sphere made of mostly ice material
  2. 4. a small object that orbits a big object
  3. 7. an object in the night's sky that lights up and moves
  4. 9. electromagnetic radiation
  5. 11. lines up all electromagnetic based on their wavelenghts
  6. 13. the science that deals with the universe
  7. 15. a big circular body tat moves in an elliptical orbit around a things
Down
  1. 1. an imaginary line about which a body rotates
  2. 2. lumps of ice , dust, and rock that circle the sun
  3. 5. and instrument used to see far away
  4. 6. a unit of measurement that measures the distance that light travels in a year
  5. 8. a number used to multiply one object to get another
  6. 10. a measure of the amount of matter in objects
  7. 12. a large natural body that travels around the earth
  8. 14. traveling around another object