Across
- 5. Shows the relationship between a star's surface temp. and absolute magnitude.
- 7. Brightness of a star as seen from earth.
- 8. Distance light travels in a year(about 9.46 trillion kilometers).
- 12. Measurement of how bright a star would be if it was seen from standard distance.
Down
- 1. All the frequencies and wavelengths of electromagnetic radiation.
- 2. Giant explosion where a huge star collapses and throws its outer layers into space.
- 3. Star that collapsed under gravity to the point that the electrons and protons have formed neutrons.
- 4. Space and all the energy and matter in it.
- 6. Cloud of gas and dust where stars are born.
- 9. Actual brightness an object.
- 10. Stars, dust, and gas bound together by gravity.
- 11. Small, hot, dim star that used to be the center of a sun-like star.