Stars & Galaxies

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Across
  1. 3. Measurement of the amount of light a star gives off.
  2. 5. A massive group of stars, dust, and gas bound together.
  3. 7. Galaxy that has no regular shape and are bright, young stars.
  4. 11. Powerful and luminous explosion of a star.
  5. 13. Instrument used to measure a stars spectra.
  6. 14. Galaxy that has a bulge in the middle and arms that spiral.
  7. 15. Active, young galaxies with black holes at the center.
  8. 16. Patterns of stars in the night sky.
Down
  1. 1. What stars become after they have exhausted their nuclear energy.
  2. 2. Forms when a low mass star has run out of hydrogen fuel for nuclear fusion and begins dying.
  3. 4. Region where gravity is so strong that nothing can escape it.
  4. 6. Measurement of the amount of light that is received on Earth.
  5. 8. The distance light travels in one year.
  6. 9. The collapsed core of a supergiant star.
  7. 10. Galaxy in the shape of round or flattened balls and contains only old stars.
  8. 12. A large cloud of gas and dust.
  9. 14. Range of wavelengths that star emit.