Across
- 2. electromagnetic radiation
- 4. a big circular body tat moves in an elliptical orbit around a things
- 5. a small object that orbits a big object
- 6. the science that deals with the universe
- 9. a large natural body that travels around the earth
- 10. traveling around another object
- 14. it between the rocky planets and gas planets
- 16. system where are space is
- 17. and instrument used to see far away
- 19. everything that exists including stars, planets, matter, energy, and time
Down
- 1. this is a sphere made of mostly ice material
- 3. lines up all electromagnetic based on their wavelengths
- 5. an object in the night's sky that lights up and moves
- 7. a unit of measurement that measures the distance that light travels in a year
- 8. a reign beyond neptune
- 11. a number used to multiply one object to get another
- 12. a measure of the amount of matter in objects
- 13. lumps of ice , dust, and rock that circle the sun
- 15. a small planet
- 18. an imaginary line about which a body rotates