Elliptical Galaxies Contain Hot Gas That Is Heated by Supernova

Q31: The three-dimensional shape of _ is set

Q32: A galaxy can contain a supermassive black

Q33: If an AGN varies its brightness on

Q34: Which of these would NOT be

Q35: The Hubble diagram is a way of

Q38: Galaxies that are classified as quasars were

Q39: Assume that when a supermassive black

Q40: AGNs appear to be powered by:<br>A) extremely

Q41: How do we measure directly that AGNs

Q76: What is plotted on a rotation curve,