Across
- 3. the density of a neutron star is the same as an ______.
- 5. the study of the nature, origin, and evolution of the universe.
- 8. the name of the galaxy cluster that the Milky Way resides in.
- 9. when the sun dies it will eventually become a _____.
- 10. outermost layer of the suns atmosphere, seen during a total eclipse
- 11. galaxy type that contains mostly old stars and has no new star formation
- 13. the linear relation between the distance to a galaxy and its radial velocity
- 14. theoretical boundary of a black hole, the point of no return
- 15. the longest form of electromagnetic radiation
- 16. galaxies can evolve and change shape through ____ with other galaxies.
Down
- 1. a star spends the majority of it life in the _____
- 2. considered the surface of the sun, where most of the light that we see from the sun
- 4. is the change in the wavelength of radiation due to relative radial motion of source and observer.
- 6. The ___ model describes pulsars as rotating neutron stars with strong magnetic fields that confine high-speed charged particles in two beams emanating from the magnetic poles of the neutron star.
- 7. one method used to show the presence of dark matter, it is the bending of light due to gravity
- 12. the shortest most energetic form of electromagnetic radiation.