Across
- 1. Milkyway is a
- 3. The actual brightness of an object
- 4. Hertzsprung Russel
- 8. A region where stars are born
- 9. What the poster we did is about
- 11. A star that has collapsed under gravity
- 12. A giant explosion where a massive star collapses
Down
- 2. A measure of how bright a star would be from a standard distance
- 5. Brightness of star as seen from Earth
- 6. What scientists use to measure far things
- 7. Remainings of an old star
- 10. Contains galaxies