Modern Astronomy

3 Credits · Level: Undergraduate

The aim of this course is to present a primarily descriptive introduction to modern astronomy, which is surely one of the most profound accomplishments of humanity and is of intellectual interest to people in all walks of life. No previous background in astronomy (or physics) is presumed. The mathematics employed will, for the most part, be limited to algebra and trigonometry. The topics to be covered will be chosen from: the appearance of the sky; an introduction to the physics underlying astronomy; instruments used by astronomers; formation and structure of our solar system; the nature of extrasolar planets and planetary systems; structure and properties of stars; structure and properties of galaxies; an introduction to cosmology; the possibility of life elsewhere in the universe. Students will be asked to take advantage of local resources, such as the Georgetown Observatory, the Naval Observatory, and the Smithsonian Institution for three self-guided field trips. Students will also carry out a modest hands-on observing project. There will be three exams that will not be explicitly cumulative. They will be written as hour exams and given during a two-hour period in the late afternoon or early evening, except for the third exam which will be given at the time designated for the final exam. During non-exam weeks there will usually be a homework assignment and a 10-minute in-class quiz. Some tutorial activities will be incorporated into class periods. This course serves as a core course for completion of the math/science requirement in the College. Textbook: Astronomy Today, Seventh Edition, by Eric Chaisson and Steve McMillan (with some ancillary materials to be decided upon). For further information, please contact the instructor.