The Universe

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Across
  1. 3. Very hot, not luminous star at the endo of its life cycle
  2. 5. Arrangement of electromagnetic waves
  3. 7. Age of the universe is 13.77 ____ years old
  4. 8. Description of the wavelength of light that shows a distant object is moving away from the observer
  5. 11. Massive star explosion
  6. 12. Name of the star in our solar system
  7. 13. The hottest stars are this color
  8. 14. Diagram that plots stars according to luminosity and surface temperature
  9. 16. name of the light we can see
  10. 18. Planets that orbit stars outside of our solar system
Down
  1. 1. Primary fuel used by stars
  2. 2. Telescope launched in December 2021 to replace the Hubble Telescope
  3. 4. Caused by the tilt of Earth on its axis while revolving around the sun
  4. 5. Describes how the universe is changing over time
  5. 6. Stars that generate energy by hydrogen fusing into helium
  6. 9. The effect that shows how objects are moving in the universe
  7. 10. Cloud of gas/dust where stars are born
  8. 15. Theory of the beginning of the universe
  9. 17. "Invisible" feature near the center of the Milky Way Galaxy
  10. 19. Shape of the Milky Way Galaxy