Across
- 2. small hot dim star
- 4. gigantic explosion where a massive star collapses
- 5. all of the wavelengths of electromagnetic radiation
- 7. large cloud of gas
- 8. actual brightness of object
- 10. measure of how bright a star would be from standard distance
- 12. graph that shows relationship between star tempature and absolute magnitude
Down
- 1. space and all the matter
- 3. brightness of a star
- 6. star that has collapsed under gravity
- 9. collection of stars
- 11. distance light travels in a year