ASTR C1420y Galaxies and Cosmology. 3 pts. Galaxies contain stars, gas dust and (usually) super-massive black holes. They are found throughout the Universe, traveling through space and occasionally crashing into each other. This course will look at how these magnificent systems form and evolved, and what can they tells us about the formation and evolution of the Universe itself. This course is similar to ASTR BC 1754 and ASTR C1404. You cannot enroll in more than one of these courses and receive credit. Science Requirement: Partial Fulfillment.

ASTR C1420x Galaxies and Cosmology 3 pts. Prerequisites: Working knowledge of high school algebra. The content, structure, and possible evolution of galaxies. The �21-centimeter line�: the song of interstellar hydrogen. Distribution mass, seen and unseen, in galaxies and clusters of galaxies. Distribution of clusters over the sky. Quasars and the nuclei of galaxies. The origin of the universe, and the present controversy over its eventual fate.