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800-290-4726 more ways to reach us. ... Clyde Tombaugh was working at Lowell in 1930 when he discovered the former planet Pluto. ... He eventually published a book titled "Why I Killed Pluto and ...
Reviews of the book have been generally positive, with James Kennedy of The Wall Street Journal calling the book a "brisk" and "enjoyable ... chronicle" of the tale of the search for new planets and the eventual demotion of Pluto from planetary status. [3] Janet Maslin of The New York Times called it a "short, eager-to-please research memoir". [4]
Pluto (minor-planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of bodies beyond the orbit of Neptune. It is the ninth-largest and tenth-most-massive known object to directly orbit the Sun. It is the largest known trans-Neptunian object by volume by a small margin, but is less massive than Eris.
Particularly notable are Eris, a dwarf planet and the only TNO known to be more massive than Pluto, leading directly to Pluto's demotion from planet status; [2] [8] Sedna, a planetoid thought to be the first observed body of the inner Öpik–Oort cloud; and Orcus.
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Pluto was considered a planet up until 2006, when researchers at the International Astronomical Union voted to "demote" it to dwarf planet. ... 800-290-4726 more ways to reach us. Mail. Sign in.
Clyde William Tombaugh (/ ˈ t ɒ m b aʊ /; February 4, 1906 – January 17, 1997) was an American astronomer.He discovered Pluto in 1930, the first object to be discovered in what would later be identified as the Kuiper belt.
"The debate over Pluto’s status highlights the evolving nature of scientific classification." ... Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us ...