The Pluto Files: The Rise and Fall of America's Favorite Planet is a book written by the astrophysicist and Hayden Planetarium director Neil deGrasse Tyson.

The book is about Pluto, which was demoted to the status of dwarf planet in August 2006 by the International Astronomical Union, thereby depriving it of its planet-hood.

[2] The book was given a good review by Jon Stewart in a guest segment with Tyson on The Daily Show.

"[3] The book explains in full detail the journey of Pluto's life from its days as Planet X, to its discovery in the early 20th century and all the way to its current title as a Trans-Neptunian object.

The book appeared on the extended hardcover nonfiction bestseller list in The New York Times in February 2009.