Across
- 1. Earths natural satelite
- 4. A graph that shows the relationship between a star's surface temperature and absolute magnitude
- 7. Light travels at a constant, finite speed of 186,000 mi/sec
- 8. A collection of stars, dust, and gas found together by gravity
- 9. The force of attraction between any two masses such as the Earth and the Moon
- 10. The distance that light travels in one year
- 13. Any body outside the Earth's atmosphere
- 14. Space and all matter and energy
Down
- 2. A large cloud of gas and dust in interstellar space;where stars are born
- 3. Our galaxy
- 5. All of the frequencies or wave lengths of electromagnetic radiation
- 6. The highness or lowness of water
- 7. Our star
- 11. The location on the H-R diagram where most stars lie
- 12. Large celestial body that is composed of gas and it emits light.