Across
- 2. a collection of stars, dust and gas bound together by gravity
- 4. a gigantic explosion in which a massive star collapses
- 5. a graph that shows the relationships between a stars surface temperature and absolute magnitude
- 7. a measure of how bright a star would be if it were seen from a standard distance
- 9. the actual brightness of a star
- 10. a small hot dim star that is left over center of an old sun
- 12. space and all the matter and energy in it
Down
- 1. spectrum all of the frequencies or wavelengths of electromagnetic radiation
- 3. the brightness of a star as seen from earth
- 6. a star that has collapsed under gravity
- 8. the distance that light travels in a year
- 11. a large cloud of gas and dust in interstellar space