INTRODUCTORY COURSES AND COURSES FOR NON-CONCENTRATORS. Astronomy 101/111 discusses our explorations of the solar system. Astronomy 102/112 deals with stars and the rest of the Universe beyond the solar system. Students in Astronomy 101 and 102 attend a weekly discussion section. Students in Astronomy 111 and 112 actively participate in a laboratory which meets in the evening each week. None of these courses is a prerequisite for any of the others. High school mathematics through plane geometry is useful. All students in each course will have opportunities for a planetarium visit and for evening observations with the telescopes mounted on Angell Hall.

**101. Introductory Astronomy: The Solar System. *** No
credit granted to those who have completed or are enrolled in
111, 130, 160, or 221. (4). (NS). *

Astronomy 101 students attend the same lectures as Astronomy 111 students (see course description below). (Sears)

**102. Introductory Astronomy: Stars, Galaxies, and the
Universe. *** No credit granted to those who have completed
or are enrolled in 112, 130, 160, or 222. (4). (NS). *

Astronomy 102 students attend the same lectures as Astronomy 112 students (see course description below). Instead of laboratory sections, Astronomy 102 incorporates weekly one-hour discussions and associated homework, which is considered along with examinations and quizzes for course grades. Cost:2 WL:4 (Section 001:Worthey; Section 007:MacAlpine)

**111. Introductory Astronomy: The Solar System. *** No
credit granted to those who have completed or are enrolled in
101, 130, 160, or 221. I, II, and IIIa. (4). (NS). *

This course presents an introduction to the field of astronomy and astrophysics with an emphasis on the discoveries from space exploration. The first third of the course deals with understanding the history of astronomy, orbits, gravitation, optics and the properties of light and matter. The rest of the course explores the properties, origin and evolution of the major planets, asteroids, comets, the Sun and other components of the Solar System with particular emphasis on comparative aspects with respect to the Earth. The origin and formation of the Solar System and the origin of life will also be discussed. This course is intended for non-science concentrators with a basic high school math and science background. Astronomy 111 has a two-hour laboratory section every week. Astronomy 101 has a one-hour discussion section. Course requirements include assigned reading, section meetings, homework, observations, quizzes, midterm and a final examination. Laboratory sections include observations with telescopes. Cost:2 WL:4 (Sears)

**112. Introductory Astronomy: Stars, Galaxies, and the
Universe. *** No credit granted to those who have completed
or are enrolled in 102, 130, 160, or 222. I, II, IIIa, and IIIb.
(4). (NS). *

This course is intended primarily for non-science concentrators, who wish to understand the phenomena and properties of the universe
beyond our solar system. There are no astronomy prerequisites, and a basic high school math background * (e.g., *not calculus)
will suffice. Students examine the widest possible range of interrelated
natural phenomena, from sub-atomic particles to the Universe as
a whole. Lectures inventory the different types of stars and examine
how red giants, white dwarfs, black holes, supernovae, and people
all fit together in one grand, remarkable scheme. The larger picture
includes our Milky Way galaxy, less hospitable exploding galaxies, and enigmatic quasars. The present state of knowledge or speculation
regarding the origin and ultimate fate of our universe will also
receive special attention. It all came from somewhere, but where...and why? Course grades will be derived from scheduled quizzes, a midterm
and a final exam, and laboratory exercises. Laboratory sections, which meet for two evening hours each week, will include planetarium
demonstrations and observations with telescopes (weather permitting)
mounted on Angell Hall. Cost:3 WL:4 (Section 001: Worthey; Section
006: MacAlpine)

**160. Introduction to Astrophysics. *** Math.
115, and prior or concurrent enrollment in Phys. 140; or permission
of instructor. No credit granted to those who have completed or
are enrolled in 102, 112, 130, 221, or 222. (4). (NS). *

Some of the most exciting phenomena and concepts in astronomy and astrophysics are explored in this survey course. One major theme is the structure and evolution of stars from their birth in giant molecular clouds through their death as white dwarfs, neutron stars, and black holes. Another important theme is galaxies, with discussions about the missing or dark matter in galaxies, galaxy-galaxy interactions, and the large-scale distribution of galaxies in the Universe. We conclude with an examination of the Big Bang, the Inflationary Universe, and the Cosmic Background radiation. This course is directed toward students with an interest in science and mathematics. There are problem sets and a weekly two-hour laboratory using telescopes in Angell Hall. Cost:2 WL:3 (Bregman)

**204/AOSS 204. Introduction to Planetary and Space Science.
*** High school mathematics through plane geometry and trigonometry. (3). (NS). *

This course will present the development of space exploration
with a concentration on the major scientific breakthroughs resulting
from the exploration of the solar system by the U.S. and Soviet
spacecraft. The course is intended for non-science majors: high
school mathematics through plane geometry and trigonometry is
recommended. The emphasis will be on comparative atmospheric phenomena, and the impact its study has had on the understanding of our own
(terrestrial) environment. Topics will include the constraints that the environment of space places on the design of space probes, the history of space sciene in studying the Earth's environment, and the deep-space missions to the other planets and Comet Halley.
(There will be two one-hour lectures a week, a one-hour discussion
section, and two to three hourly exams. This course can be used
to satisfy the LS&A science requirement.

**361. Astronomical Techniques. *** Astronomy
160 or permission of instructor. (4). (Excl). *

This course is intended primarily for students concentrating in astronomy, but other science and engineering students may elect it. It is an introduction to various techniques for obtaining and analyzing observational data. The areas covered are stellar trigonometric distance (parallax), imaging and photometry with electronic detectors, radiometric techniques, and interferometry. In addition, early in the course there will be a series of lectures on error theory and least squares, to provide expertise needed in the analysis of observational data. Students will use telescopes and instrumentation on the roof of Angell Hall and at the Radio Observatory near Dexter to make observations. Three lectures and one two-hour laboratory period each week. Course work will also include homework exercises and reading in original sources but there are no examinations. (Aller, Sears, Seitzer)

**401(421). Solar System Astrophysics. *** Phys.
140 and Math. 116, and prior or concurrent enrollment in Phys.
240; or permission of instructor. (3). (Excl). *

30% of the course will be based on independent reading of William
K. Hartman's * Moons and Planets * (second edition). The
remaining 70% of the course will be based on material presented
in the lectures. This is divided into 3 parts. Part I deals with the mechanics of the solar system, and covers topics such as the
two-body problem, N-body relations, the virial theorem, potential
about an oblate spheroid, equations of rigid-body motion, * etc. * Part II treats geochemistry and cosmochemistry with special reference
to the solar system. Included topics are fundamental principles
of thermodynamics and chemical reactions, meteorites, geochemical
classification of the elements, models of the solar nebula, condensation
sequences from the solar nebula and the composition of planets.
Part III deals with planetary structure, and emphasizes comparative
planetology of the moon and terrestrial planets. Weekly problem
sets are assigned, some of which require running programs on the
Campus Mainframe (MTS) or PC. While students are not required
to write their own programs, a knowledge of one or more high level
languages (Fortran, C, Pascal) will be useful. The level of difficulty
will be similar to that of junior and senior courses in physics
and chemistry. Cost:2 WL:3 (Cowley)

**404. Galaxies and the Universe. *** Math.
216, and prior or concurrent enrollment in Phys. 242; or permission
of instructor. No credit granted to those who have completed Astro.
422. (3). (Excl). *

This class focuses on the content of the universe on size scales larger than individual stars. We will study the mechanics of stellar orbits and the structure of galaxies, the evidence for dark matter in our galaxy and others, the interstellar gas in galaxies, the morphology of galaxies, and evolution of stellar populations. On scales larger than individual galaxies, we will study the structure and dynamics of clusters of galaxies and larger scale structure. On even larger scales, we will look at the evolution of the universe as a whole, the cosmic microwave background radiation and inferences from its smoothness, and the formation of galaxies and structure on larger scales. This class is designed for science majors interested in a fairly serious introduction to the subject, and for upper level astronomy majors. Cost:2 WL:3 (Richstone, Seitzer)

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