Documents Galaxies Chapter 20. Galaxy Classification In 1924, Edwin Hubble divided galaxies into different...

Slide 1 Galaxies Chapter 20 Slide 2 Galaxy Classification In 1924, Edwin Hubble divided galaxies into different “classes” based on their appearance. Why begin here? Hubble…

Documents Organizing the cosmos Galaxies & our Universe There is still uncertainty on exactly how the universe...

Organizing the cosmos Galaxies & our Universe There is still uncertainty on exactly how the universe and our solar system formed. There are many theories but no one knows…