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