Earth in the Universe 8-9

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Across
  1. 4. a small rocky particle that moves through space
  2. 6. a shell of cooler H above a star
  3. 10. the red-orange layer above the photosphere of a star
  4. 12. matter that emits no light at any wavelength
  5. 13. a meteoroid that strikes a plant or a moon
  6. 14. the wide, outermost layer of a star´s atmosphere
  7. 15. a cloud of gas and dust
Down
  1. 1. a small, rocky object that orbits the Sun
  2. 2. the apparent surface of a star
  3. 3. a huge collection of stars, gas, and dust
  4. 5. the shift to a different wavelength on the electromagnetic spectrum
  5. 7. layer of a star where hot gas moves up toward the surface and cooler gas moves deeper into the interior
  6. 8. the distance light travels in one year
  7. 9. a small, rocky and icey object that orbits the Sun
  8. 11. regions of strong magnetic activity