Across
- 3. Shape of the Milky Way Galaxy
- 5. Color of highest temperature stars
- 6. Measure of magnitude; how bright a star truly is
- 7. Number of times a wave passes a certain point in a given time
- 9. Natural or human-made object that orbits something else
- 13. Telescopes that scientists use to study visible light
- 16. Light, energy, and information
- 17. Galaxies that have a circular or oval shape
- 18. Human-made objects that are sent out into space but don’t orbit something else
- 19. Side of the electromagnetic spectrum with shorter wavelengths
- 23. Last stages of a massive star; leaving either a Neuron star or a black hole
- 24. When a light source is moving towards the observer
- 25. HR Diagrams show the relationship between luminosity and ______________
- 26. White dwarfs are considered this because they have burned off the last of their fuel
- 29. Medium-sized star that Earth revolves around; part of Main Sequence stars
- 30. When a light source is moving away from the observer
Down
- 1. Distance from any point on a wave to a corresponding point on the next wave
- 2. System of stars and other matter; held together by gravity
- 4. Large cloud of cosmic dust and gas; where new stars are formed
- 8. ______________ and Russell give HR Diagrams their name
- 10. Direction that objects are moving as a result of the Big Bang Theory
- 11. Side of the electromagnetic spectrum with longer wavelengths
- 12. All forms of radiation together; spectrum
- 14. Total amount of light emitted by a star or other celestial body
- 15. How star spectral classes are classified
- 20. Galaxies that have no defined shape
- 21. Measure of magnitude; how bright a star appears
- 22. Coolest temperature stars; located in the bottom right hand corner of an HR Diagram
- 27. Light radiation that the human eye can detect; ROYGBIV
- 28. Color of lowest temperature stars