Module Five: Directions for the Comparison/Contrast Essay Write a five paragraph essay, using sources and MLA style with a works cited page and include photos and illustrations, to document the similarities and differences of the two major NASA missions: 1. The past Apollo missions to the Moon and 2. The planned future missions to Mars NASA.gov is a primary source for both missions, use it for quotations and include it in your Works Cited page. Also, there are many other sources available through our library online databases and others via google.search. A sample outline could be: I. Introduction and thesis statement II. How the two missions are alike III. How the Apollo missions were unique for traveling to the Moon and back IV. How the planned Mars missions are unique for traveling to the Red Planet. V. Conclusion .