Galaxy Collisions Top left is an image of the Cartwheel galaxy. The ring of young stars was likely created as a smaller galaxy passed through the disk of the larger one.…

Slide 1 Chapter 25 Galaxies and Dark Matter 25.1 Dark Matter in the Universe We use the rotation speeds of galaxies to measure their mass: 25.1 Dark Matter in the Universe…

Galaxy Classification Galaxy Classification Edwin Hubble was the first person to establish the distances to other galaxies. Because he studied so many galaxies, he began…

The Universe Galaxies are believed to have formed from mergers of smaller galaxies and star clusters. Galaxy Formation and Evolution The separation between galaxies is usually…

Chapter 16 Galaxies and Dark Matter Chapter 16 Galaxies and Dark Matter 1 Units of Chapter 16 Dark Matter in the Universe Galaxy Collisions Galaxy Formation and Evolution…

Chapter 16 Galaxies and Dark Matter Chapter 16 Galaxies and Dark Matter 1 Units of Chapter 16 Dark Matter in the Universe Galaxy Collisions Galaxy Formation and Evolution…

Today in Astronomy 102: prologue in outer space, continued Visit 109 M, 1013 M and 45 M black holes Image: the “Cartwheel” galaxy, by the Hubble Space Telescope…