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  1. Pluto

    Date de publication:

    5 Août 2003

    The smallest and usually the most distant planet in our solar system, Pluto is unique as it is neither a terrestrial planet nor a gas giant. Another surprise is its orbit which, rather than being circular and very near the ecliptic plane like the other planets, is highly elliptical and tilted.

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  2. Pluto is no longer a planet

    Date de publication:

    24 Août 2006

    At its General Assembly in Prague, the International Astronomical Union decided that Pluto should no longer be considered a planet in the Solar System. It shall now be classed in a new category of celestial objects called “dwarf planets”, quite separate from the 8 “real” planets.

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