Space

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Across
  1. 2. flare a bright, gaseous surface eruption from the sun (2 words)
  2. 3. hottest planet in solar system
  3. 6. determined orbits were elliptical
  4. 7. wind stream of charged particles from the sun (2 words)
  5. 8. no longer a planet due to not meeting all 3 criteria
  6. 9. last planet
  7. 14. known for rings
  8. 16. known as the "northern lights" (2 words)
  9. 18. largest planet
  10. 19. red planet
  11. 20. rock that lands on earth
  12. 22. known as "shooting stars"
  13. 24. made precise measurements of location of planets, not exact
  14. 25. believed the sun was the center of the Solar System
  15. 26. term for when Earth is the center
Down
  1. 1. term for the inner most planets
  2. 2. spot on the surface of the sun with cooler temperatures
  3. 4. determined the planets stay in orbit because of inertia and gravity
  4. 5. confirmed Copernicus believe by viewing planet phases
  5. 10. surface of the sun
  6. 11. term to represent the outermost planets (2 words, no space for answer)
  7. 12. chunk of ice and dust that orbits the sun
  8. 13. has light blue color due to methane
  9. 15. white halo around the sun
  10. 17. believed Earth was the center of the universe
  11. 19. rock/ice that is in space
  12. 20. closest to the sun
  13. 21. term for when the Sun is the center
  14. 23. only planet with liquid water