Space and children.

Today I was talking to my son Mario (6 years) about gravity force and I was trying to explain that:

• an apple falls from the tree
  
  
• the Moon turning around the Earth 

share the same cause. Ok, maybe is a little early (never underestimate childrens).



When I finally asked him: "Do you know why the Earth doesn't fall in the Sun?", he politely answered that the colorful ring (see image) is like a rail, thus the Earth and the other planets cannot steer off their guide." :-)

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