Describes comets and early comet watching, explores the history and characteristics of Halley's Comet, and relates how people around the world are preparing for its return in 1986. This description may be from another edition of this product.
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.