Galaxies Contain 10 Times as Much Dark Matter as Visible

Q32: The mass of a galaxy can be

Q33: All elliptical galaxies are more massive than

Q34: At the longest look-back times, we see

Q35: The mass of a galaxy's central black

Q36: Hubble's Law is only effective in measuring

Q38: Rich galactic clusters _.<br>A) are rare, because

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