Across
- 4. travels approximately 300,000 km/s
- 6. Forms into a red supergiant
- 7. tool scientists use to spread light into different wavelengths to measure the wavelengths
- 12. The universe began 13.7 billion years ago with an enormous explosion
- 14. includes color temperature size composition.
Down
- 1. what are stars before they become a high/low mass star
- 2. the distance that light can travel over a year
- 3. formed from a low mass star
- 5. active young galaxies with blackholes in the center
- 7. earth is a ______ galaxy
- 8. A red supergiant forms into a...
- 9. When a star is round or flatten balls old star only it is...
- 10. a supernova can become a neutron star or a...
- 11. The range of wavelengths that stars emit
- 13. A huge group of single stars, star systems, star clusters, dust and gas bound to gravity