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24 Aug 2006
Pluto Loses its Status as a Planet.
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21 Jun 2006
Two newly discovered moons orbiting Pluto were named Nix and Hydra.
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5 Jan 2005
The solar system's largest known dwarf planet is discovered.
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7 Mar 1996
The Hubble Space Telescope captured the first images of the surface of Pluto.
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22 Jun 1978
United States Naval Observatory astronomer James Christy discovered Pluto's largest moon.
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1 May 1930
Pluto was officially named.
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18 Feb 1930
American astronomer Clyde Tombaugh discovered Pluto.
