. . . . . . . . . "The planet hunter : the story behind what happened to Pluto" . "The planet hunter : the story behind what happened to Pluto"@en . . . . . "A biography of Mike Brown, from his childhood to becoming an astronomer to his search for the 10th planet that shook up the solar system."@en . "The story of an astronomer whose discoveries let to the reclassification of Pluto and a new understanding of the solar system." . . "Juvenile works" . "Juvenile works"@en . . "Biography" . . "Biography"@en . "Pluto (Dwarf planet)" . . . .