How Do We Know That Many E Galaxies Contain Significant

Q74: The disks of spiral galaxies appear blue

Q75: Outside the dark matter halo of a

Q76: Seyfert galaxies are unique because they have

Q77: If the average quasar has a

Q78: Stars in the disks of spiral galaxies

Q81: Elliptical galaxies appear red because:<br>A) they are

Q82: How did Hubble use his tuning fork

Q83: Dust in galaxies does not count as

Q84: Quasars were first discovered in which region

Q84: Why do rotation curves of galaxies imply