Introduces principles of modern astronomy for nonscience majors, 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 observation sessions at Sommers-Bausch Observatory. Similar to ASTR 1200, but with recitation and sequence link to ASTR 1010. Also similar to ASTR 1040. Students may receive credit for only one of ASTR 1020, 1200, 1120, or 1040. Prereq., ASTR 1010 or 1000. Approved for arts and sciences core curriculum: natural science.