Differences

This shows you the differences between two versions of the page.

--- courses:phy100:9 [2023/08/12 21:45] – asad
+++ courses:phy100:9 [2023/12/08 08:04] (current) – asad
@@ Line 1: / Line 1: @@
-====== 11. Galaxies and Black Holes ======
+====== 9. Galaxies and Black Holes ======
 ===== - Galaxy types =====
@@ Line 81: / Line 81: @@
 And, even more interesting, we see that an elliptical galaxy can turn into a spiral because of its interaction with a dwarf galaxy that is passing it by. The dwarf displaces some gas from the center of the elliptical and this displaced gas spirals toward the galactic center. In a few billion years this process could convert the elliptical into a spiral.
-===== Dark matter =====
+===== - Galaxy clusters and dark matter =====
+{{https://www.esa.int/var/esa/storage/images/esa_multimedia/images/2007/07/the_bullet_cluster2/10084622-2-eng-GB/The_Bullet_Cluster_pillars.jpg?nolink}}