Across
- 2. faint glow of the big bang
- 5. the study of stars
- 6. change in frequency of a wave
- 8. collapsed core of a massive supergiant star
- 10. a star losing its nuclear fuel
- 11. device used to see stars up close
- 13. a system of billions of stars
- 15. light nuclei merge to form a heavier nucleus
- 16. cloud of gas and dust in outer space
- 17. an explosion of a star
Down
- 1. how the universe began
- 3. science of the origin/development of the universe
- 4. every particle attracts every other particle
- 7. distribution of electromagnetic frequency/wavelength
- 9. classification of stars based on color v. brightness
- 12. equivalent to how much light travels in a year
- 14. gravity is so intense that it'll collapse space
- 18. light is stretched/shifted towards the red