Planetary Astronomy is a comprehensive book about observing, imaging, and studying planets. It has been written under my direction by seven authors, all being skillful amateur observers in their respective domains: Christian Viladrich, Marc Delcroix, Jean-Jacques Poupeau, Frédéric Burgeot, Giuseppe Monachino, and Jean-Pierre Prost. This is a translation of the book Astronomie planétaire who is a great success in France since 2015.