• Question: is pluto a planet?

    Asked by fine to Arttu on 20 Jun 2011.
    • Photo: Arttu Rajantie

      Arttu Rajantie answered on 20 Jun 2011:

      It used to be, but according to the International Astronomical Union it no longer is. That is a shame, but there are a lot of rocks with a similar size which they would have also had to call planets to be consistent.

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