Clyde Tombaugh and the Search for Planet X

Twelve-year-old Clyde Tombaugh stepped up and took his first look through a telescope. Gazing at the moon, he was thrilled by the sight of its craters and valleys. What other mysteries were out there in space? Clyde wondered. Learn the fascinating true story of the hardworking young man who discovered Pluto through richly colored illustrations that capture Clyde''s determination and bring his stor...