Across
- 2. collection of stars,dust,and gas bound together by gravity
- 4. and all the matter and energy in it
- 8. year-the distance that light travels in a year
- 9. gigantic explosion in which a massive star collapses and throws its outer layers into space
- 11. magnitude-a measure of how bright a star would be if it were seen from a standard distance
Down
- 1. magnitude-the brightness of an star such as seen from earth
- 3. diagram-hertzsprung -russell diagram a gragh that shows the relationship between a star's surface temperature and absolute magnitude
- 5. spectrum- all of the frequency or wavelengths of electromagnetic radiation
- 6. large cloud of gas and dust in inerstellar space
- 7. dwarf-a small hot dim star that ia the left over center of an old sun like star
- 10. star-a star that has collapsed under gravity to the point that the elections and protons have smashed together to form neutrons