To download the outline for Chapter 13, click here.
To view the clicker questions for Chapter 13, click here.
Composite image (Hubble: visible = red, green, blue. VLA: radio = yellow. Chandra: x-ray = purple.) of dwarf galaxy Henize 2-10. Crosshair marks a supermassive black hole (SMBH) at the center. Why are we surprised? Because the galaxy itself is tiny (about 3% the diameter of the Milky Way), but the SMBH at its center is about a million solar masses (about 25% as big as our own SMBH--which makes it proportionally way huge). Oh, and the galaxy itself is a hot mess (literally--look at all that purple), without any of the spiral structure we love so much in our own galaxy.