Two stunning photo essays to add to Simon's impressive list of astronomy titles; both visually striking and intellectually satisfying, they should find a wide audience. The Sun, Simon's one hundredth book, glows With vibrant full-color photographs. Magnetographs, coronagraphs, prominences, sunspots: the difficult specialized language is woven into a lucid text which makes the concepts both comprehensible and awesome. In Stars, Simon discusses novas, white dwarfs, red giants, supernovas, black holes, pulsars, and quasars, and how stars are born, change, grow old and die. The full-page photographs and computer drawings are breathtaking. The text includes a surprising amount of information, with difficult concepts presented simply. Brief as they are, neither title is indexed, and the pictures are not captioned. Readers will find both titles a celebration and a challenge.