The Velocity Dispersion Method Can Be Used to Find the _______________

Q39: How are standard candles used to measure

Q40: The mass of visible matter in a

Q41: Edwin Hubble and Milton Humason discovered that

Q42: Elliptical galaxies contain a mix of old

Q43: Compared to other spiral galaxies, the Milky

Q45: The diameter and luminosity of a galaxy

Q46: A key piece of evidence that leads

Q47: In general, _.<br>A) spiral galaxies are the

Q48: What direct evidence is there for galactic

Q49: The farthest galaxies that astronomers have seen