• Question: How come all of the planets are spherical?

    Asked by The Milky Bar Kid MINUS to Andy, Dwaine, Natt, Priya, Tatiana on 22 Jun 2015.
    • Photo: Andrew Scott

      Andrew Scott answered on 22 Jun 2015:

      When the planets were big balls of liquid rock the gravity of the planet pulled all the rock towards the centre. With a sphere, all points on the surface are the same distance from the centre. If you had a shape with corners, the corners would be pulled in with gravity.

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