Across
- 1. energy output from the surface of a start
- 5. a star cluster that is densely packed
- 6. color of star that can't sustain the fusion of hydrogen
- 8. distance light travels in one year
- 11. constellation that appear to rotate around the North Star
- 14. a group of stars that form a shape
- 18. large cool luminous star
- 20. the joining of atoms to form a new element
- 21. a cloud of gas and dust
- 23. cluster stars gravitationally bound to each other
- 24. unit equal to 3.26 light years
- 25. gas shoots off of a neutron star's surface
- 29. type of doppler shift that shows longer wavelengths of light
- 30. the gas that makes up most stars
Down
- 2. a star that blows itself apart
- 3. place where gravity is so strong light cannot escape
- 4. disk shape with a hot condensed center
- 7. apparent shift in position due to motion of person
- 9. magnitude that shows how bright a star appears
- 10. a dead star
- 12. determines the life cycle of a star
- 13. diagram used to plot the properties of a star
- 15. magnitude of a star if they were all at the same distance
- 16. neutron star the spins and emits light
- 17. 2 stars orbit a common center of mass
- 19. sequence area on HR diagram where most stars are found
- 22. controls the nuclear reaction rate
- 26. type of doppler shift that shows shorter wavelengths of light
- 27. type of star cluster that is not densely packed
- 28. small hot dense star