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Charlie, 5 poses for a picture at home in Smithfield, where he wrote to one of AustraliaÕs top astrophysicists, Australian Academy of Science Fellow, Professor Elaine Sadler, to find out why Pluto was demoted to a dwarf planet.  Saturday, Feb. 1, 2020. Picture: MATT LOXTON

Why isn’t Pluto a planet anymore?

Pluto was reclassified from a planet to a dwarf planet in 2006. Many still don’t understand why, including five-year old Charlie from Smithfield. So he wrote to the International Astronomical Union.

Original URL: https://www.adelaidenow.com.au/south-australia-education/early-education/page/14