Stars and Universe Crossword Puzzle

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Across
  1. 1. "Invisible" feature near the center of the Milky Way Galaxy
  2. 4. Telescope launched in December 2021 to replace the Hubble Telescope
  3. 6. Name of the light we can see
  4. 7. Planets that orbit stars outside of our solar system
  5. 11. Diagram that plots stars according to luminosity and surface temperature
  6. 13. Cloud of gas/dust where stars are born
  7. 15. Name of the star in our solar system
  8. 16. The closest galaxy to our galaxy
  9. 18. The hottest stars are this color
  10. 19. Primary fuel used by stars
Down
  1. 2. Describes how galaxies farther away are moving faster away from us
  2. 3. Caused by the tilt of Earth on its axis while revolving around the sun
  3. 5. Very hot, medium sized star at the end of its life cycle
  4. 8. Massive star explosion
  5. 9. Theory of the beginning of the universe
  6. 10. Age of the universe is 13.7 ____ years old
  7. 12. Stars that generate energy by hydrogen fusing into helium
  8. 14. First element to form
  9. 15. Shape of the Milky Way Galaxy
  10. 17. Name of our galaxy
  11. 20. Longest wavelength of visible light