Stars

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Across
  1. 2. of the Sun visible to the naked eye — Photosphere
  2. 4. of how bright a star truly is — Luminosity
  3. 7. distance light travels in one year — Light Year
  4. 9. where energy moves outward by radiation — Radiative Zone
Down
  1. 1. above the photosphere that emits red light — Chromosphere
  2. 3. distance between Earth and the Sun — Astronomical Unit
  3. 5. massive, glowing ball of gas held together by gravity — Star
  4. 6. flow region just below the photosphere — Convection Zone
  5. 8. outermost layer of the Sun’s atmosphere — Corona