What the physical universe is composed of
(1) Write a detailed but concise account of what the physical universe is composed of, both at the level of fundamental physics (particles, forces, etc.) and at the level of cosmology and astronomy (galaxies, stars, planets, etc.). In the final paragraph of your essay, discuss in what ways (if any) your worldview might be affected by this knowledge, or by other content of Unit 2. Your essay should discuss content associated with at least 3 distinct class sessions in Unit 2.