Wollheim, Donald A.,  1914-1990 <br/><br/>
The Secret of the Ninth Planet 

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<br/><br/> Wikipedia page about this book: https://en.wikipedia.org/wiki/The_Secret_of_the_Ninth_Planet  Release date is 2010-09-05 
<br/><br/>Produced by Greg Weeks, Roger L. Holda, Mary Meehan and<br/>the Online Distributed Proofreading Team at<br/>http://www.pgdp.net  Produced by Greg Weeks, Roger L. Holda, Mary Meehan and<br/>the Online Distributed Proofreading Team at<br/>http://www.pgdp.net 
<br/><br/> "The Secret of the Ninth Planet" by Donald A. Wollheim is a science-fiction novel published in 1959. When the Sun's light mysteriously begins to dim across Earth, threatening a new ice age, young Burl Denning discovers alien machinery in the Peruvian Andes. As calculations reveal the Sun may explode within years, Burl joins a desperate expedition aboard an experimental antigravity spaceship to hunt down similar installations throughout the solar system and confront an alien force from Pluto. (This is an automatically generated summary.) 
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<br/><br/><label>Subjects--Index Terms: </label>Science fiction Pluto (Dwarf planet) -- Fiction 
<br/><br/><label>LC Class. No.: </label>PS