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The Secret of the Ninth Planet

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The Secret of the Ninth Planet - Wollheim, Donald A
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Helping his father on an archeological expedition in the Peruvian Andes, Burl Denning looks forward to studying engineering when he enters college in the fall. The expedition's study of Inca ruins is interrupted by the arrival of a small guided missile from California. Inside the missile they find a message informing them that over the past several days the sun's light has dimmed all over the world, threatening the onset of a new ice age, and that the source of the dimming has been traced to a point seven miles from their ...

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