#hardcover#SciFi#sciencefiction#Hoyle#Vintage#Hugo#Nebula#Nobel#BigBang "Fifth Planet" by Fred Hoyle and Geoffrey Hoyle. Vintage 1963 Science Fiction Book Club hardcover. This is a SFBC version of the First Edition of this book. Somewhat rare book. Ships well-protected in (1) business day! Award-Winning author Fred Hoyle and his son, Geoffrey were both scientists who wrote Science Fiction. More about "Fifth Planet": It is 2087. Scientists discover a roving star with observable planets is due to pass close to our sun, close enough for conventional spacecraft to reach it. The first planets seen are four gas-giants, but then, an inner 'Fifth Planet' is found. Signs of chlorophyll are detected, suggesting that this inner or 'Fifth Planet' supports life. Rival Russian and US expeditions are launched to visit it.