Covers principles of modern astronomy summarizing our present knowledge about the Sun, stars, birth and death of stars, neutron stars, black holes, galaxies, quasars, and the organization and origins of the universe. May require nighttime observing sessions at Sommers-Bausch Observatory. Required in ASTR major/minor. Includes a recitation. Prereq., ASTR 1030. Prereq. or coreq., Calculus I (MATH 1300 or APPM 1350). Students may receive credit for only one of ASTR 1020, 1040, 1200, or 1120. Similar to ASTR 1020 and 1200 but taught at a higher intellectual level including a significant amount of quantitative analysis. Approved for GT-SC2. Approved for arts and sciences core curriculum: natural science.