This 1953 book sets out some observational facts about comets and then accounts for their origin and explains how comet tails are formed.

This volume considers the role comets may have played in the origins and evolution of life. This is the only book dealing in depth with this subject. It is part

Over forty authorities present sections on the nucleus, dust, coma, and tails of comets, along with sections on their origin, and relationships to other solar s

Comets are small bodies, but of great cosmic relevance. Given its pristine nature, they may preserve valuable and unique information on thechemical and physical