• Question: what is the difference between a planet and a star

    Asked by Jessie to Alex, Amanda, Marco, Olivia, Sha on 13 Mar 2017.
    • Photo: Alex Evans

      Alex Evans answered on 13 Mar 2017:

      As far as I know, to be a star you have to be big enough and hot enough to be able to start nuclear reactions at your core – which is what produces all the light and heat.

      Planets tend to be much smaller and cooler, but still big enough to become a nice round shape thanks to gravity pulling it all in together!

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