Remember that unsatisfactory feeling as a kid when you’d try to jump in the air as high as possible, and something brings you back to the ground? Well, that is Gravity. Like your mother, it's always there, it never changes, and you can’t break it’s rules. But that's for the better! If one day, the Earth's gravity disappeared, the consequences would be flat out disastrous.  Gravity depends on the mass, which is, in turn, related to the matter. The more matter you have, the bigger the mass is. And the bigger the mass is, the stronger an object's gravitational pull is.  You might have noticed that the gravity on our planet never changes, right? That's because the mass of the Earth always remains the same. But what if we imagined that one day, our planet would give off a terrifying “crack”, and gravity would just disappear? 

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