Including the abundance of information known prior to the return of Halley's comet, as well as the new information discovered since then, the science of comets is described here by order of its discovery. From tail phenomena to coma morphology, to the most recent findings from space missions, this comprehensive text provides complete and up-to-date coverage of the subject. It will be suitable for advanced undergraduates and graduate students of astronomy and planetary science. First Edition Hb (2001): 0-521-23906-0 First Edition Pb (2002): 0-521-27218-1