Universe

PART I: INTRODUCTING ASTRONOMY
Astronomy and the Universe
Guest Essay Why Astronomy?, Sandra M. Faber
Knowing the Heavens
Guest Essay Why Astrology Is Not Science, James Randi
Eclipses and the Motion of the Moon
Guest Essay Archaeoastronomy and Ethnoastronomy, Mark Hollabaugh
Gravitation and the Waltz of the Planets
The Nature of Light
Optics and Telescopes
PART II: PLANETS AND MOONS
Comparative Planetology I: Our Solar System
Comparative Planetology II: The Origin of Our Solar System
Scientific American article Dangling a COROT, Alexander Hellemans
The Living Earth
Our Barren Moon
Mercury, Venus, and Mars: Earthlike yet Unique
Scientific American article Father of Spirit and Opportunity, David Appell
Jupiter and Saturn: Lords of the Planets
Jupiter and Saturn's Satellites of Fire and Ice
Uranus, Neptune, Pluto, and the Kuiper Belt: Remote Worlds
Vagabonds of the Solar System
Guest Essay Pluto and the Kuiper Belt, Scott Sheppard
PART III: STARS AND STELLAR EVOLUTION
Our Star, the Sun
The Nature of the Stars
The Birth of Stars
Stellar Evolution: On and After the Main Sequence
Stellar Evolution: The Deaths of Stars
Neutron Stars
Black Holes
PART IV: GALAXIES AND COSMOLOGY
Our Galaxy
Galaxies
Quasars and Active Galaxies
Cosmology: The Origin and Evolution of the Universe
Scientific American article Dark Forces at Work, David Appell
Exploring the Early Universe
Scientific American article Making Sense of Modern Cosmology, P. James & E. Peebles
The Search for Extraterrestrial Life
Guest Essay A Biologist's View of Astrobiology, Kevin W. Plaxco

ROGER A. FREEDMAN, University of California, Santa Barbara, USAWILLIAM J. KAUFMANN, sometime of San Diego State University, USA