This is the most informative, congenial and accessible general look at cosmology to come along since Carl Sagan's Cosmos 27 years ago—and, like Cosmos, it's a companion to a PBS series, in this case a Nova special (to air on September 28 and 29). But Tyson (The Sky Is Not the Limit, etc.), who's director of Manhattan's Hayden Planetarium, and Goldsmith (Connecting with the Cosmos, etc.) are no Sagan clones; they bring a distinct point of view and tone to this title. The point of view surfaces ri...