Answer the following question about nature of galaxies.
Explain how astronomers determined that there are galaxies other than the Milky Way.
[2 marks]
Give three reasons (with explanations) why astronomers were confused about whether there were galaxies other than our own. [3 marks]
Describe the Hubble "tuning fork" diagram, and what it tells us. [3 marks]
Describe the large scale structure of the universe. [2 marks]
