Across
- 3. Magnitude, the brightness of a star as seem from earth
- 5. dwarf, a small hot dim star that is the left over center of an old sun like star
- 6. diagram, Hertzsprung Russell diagram a graph that shows the relationship between a star's surface temperature and absolute magnitude
- 7. the actual brightness of an object such as a star
- 9. space and all matter and energy in it
- 11. the distance that light travels in a year
- 12. a large cloud of gas and dust in interstellar space;a region where stars are born
Down
- 1. a gigantic explosion in which a massive star collapse and throws its outer layer into space
- 2. spectrum, all of the frequencies or wavelengths of electromagnetic radiation.
- 4. Magnitude, a measure of how bright a star would be if it seem from a standard distance
- 8. star, a star that has collapsed under gravity to the point that the electrons and protons have smashed together to form neutrons
- 10. a collection of stars,dust,and gas bound together by gravity