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  The Solar System
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Comets, the Kuiper Belt and the Oort Cloud

 
No-oone knows very much about Pluto Pluto
This tiny lump is the furthest out planet, although some people don't think it's a planet at all - they say it should be called a giant comet!
  • 2,300 km wide
  • 5,915 million km from the Sun
  • Temperature - minus 220 degrees Celsius
  • Its year is 90,803 Earth days
  • Its day is 153 hours
  • It has a very thin Nitrogen atmosphere
  • No one knows what its core is made of, as no probes have visited it and no maps have been made of it
  • It has one moon

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