TEKS 8.9A

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Across
  1. 4. all existing matter and space
  2. 8. brightness of a celestial object
  3. 10. the dense stellar core that remains after a star like our sun has exhausted its nuclear fuel
  4. 12. a white dwarf that has cooled down so much that it no longer emits heat or light
Down
  1. 1. in which nuclei, or nucleus and external subatomic particle collide
  2. 2. cloud of gas and dust in outer space
  3. 3. plots the magnitude of stars
  4. 5. an extremely large,luminous, and massive star
  5. 6. a massive collection of stars, gas, and dust bound together by gravity
  6. 7. result of joining 2 or more things together
  7. 9. a away of classifying stars based on their surface temperature
  8. 11. a system of millions or billions of stars