The fourth edition of this best-selling field guide was revised and updated to include the latest information. As of the 14th printing (June 2016; the cover medallion says "Pluto Flyby Included), all the time-sensitive material is valid through 2020: solar eclipses, phases of the moon, positions of the planets, and more. Twenty-four Monthly Sky Maps, revised and in color, show exactly what you’ll see when facing north or south in the night sky. Fifty-two Atlas Charts, also revised and in color, cover the entire sky, including close-ups of areas of special interest such as the Pleiades and the Orion Nebula. Two dozen pages cover the August 21, 2017, total solar eclipse whose path crosses the continental United States, how and where to view it, and other aspects of current and future solar eclipses.