More reading articles. I looked up some basic information on IRAF, the program language I will use to manipulate the pictures of galaxy clusters with. Overall, today was relatively unproductive. I am going to ask more about when and how to get the images to work on so that I can be more useful. Fortunately, lunch with the other interns broke up the boredom. I also visited one of the other interns, who is working on modifying the DSE.