Why does an air filled balloon get brust when it reache's in great height?

So I think the balloon will expand... at some point when the skin thickness reaches a critical value (as balloon expands the thickness of balloon skin decreases) it will burst because the pressure of the gas inside will exceed the strength of the elastic balloon material.

So I think the balloon will expand... at some point when the skin thickness reaches a critical value (as balloon expands the thickness of balloon skin decreases) it will burst because the pressure of the gas inside will exceed the strength of the elastic balloon material.

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.