1. what is the study of the cosmos? the study of the cosmos includes what topics? 2. how do astronomers think the universe was created? 3. what evidence is there to support the big bang theory? 4. how is matter distributed within the universe? 5. what are galaxies? why is it important to study them? 1. how are stars important to the milky way? 2. how has the knowledge and perception of the universe changed over the past century? 3. what effect does dark energy have on the universe? 4. how is matter important to the universe? 5. what do scientists believe may be the fate of the universe? which theory do you feel is the better explanation of what may happen? why?