Across
- 1. Space and all the matter and energy in it
- 6. The actual brightness of an object such as a star
- 8. A large cloud of gas and dust in interstellar space; a region where stars are born
- 9. The brightness of a star as seen from Earth
- 10. A small hot dim star tat is the left over center of an old sun like star
- 12. A measure of how bright a star would be if it were seen from a standard distance
Down
- 2. All of the frequencies or wavelengths of electromagnetic radiation
- 3. A collection of stars, dust, and gas bound together by gravity
- 4. The distance that light travels in a years; about 9.46 trillion kilometers
- 5. Hertzsprung-Russel diagram a graph tat shows the relationship between a star's surface temperature and absolute magnitude
- 7. A gigantic explosion in which a massive star collapses and throws its outer layer into space
- 11. A star tat has collapsed under gravity to the point that the electrons and protons have smashed together to form neutrons