Across
- 2. -a place in space where gravity pulls so much that even light can not get out
- 3. - shows the relationship between a star's temperature and its luminosity
- 5. - The complete range of all types of radiation that has both electric and magnetic fields and travels in waves
- 8. -the brightest star in the sky
- 15. - a cloud of gas and dust in space
- 20. - he apparent magnitude an object would have if it were located at a distance of 10 parsecs
- 21. -The transfer of energy in these gamma-ray pulsars slows the spin of the star
- 23. -the process that powers the sun and the stars
- 24. - an invisible force that pulls objects toward each other
- 25. -objects in space that range in size from dust grains to small asteroids
Down
- 1. -the difference in direction of a celestial object as seen by an observer from two widely separated points
- 4. -small, rocky objects that orbit the Sun
- 6. -a resistance to a given force
- 7. -the stellar core left behind after a dying star
- 9. -body that makes it oppose any force that would cause a change in its motion
- 10. -how bright an object appears in the sky from Earth
- 11. - frozen gases, rock, and dust that orbit the Sun
- 12. -gaseous clouds
- 13. -explosion of a star
- 14. -typically has a rotating disc with spiral 'arms' that curve out from a dense central region
- 16. -a group of stars in a shape given a name
- 17. -a supermassive black hole feeding on gas
- 18. -rotating neutron stars observed
- 19. -a dying star in the final stages of stellar evolution
- 22. -allow the masses of stars to be determined