The resulting energy from the collision creates energy conditions similar to those that were present at the Big Bang.

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Pions are particles created by the collision of the high-energy protons from the supernovas.

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Mountains are naturally high-energy environments, being formed by the collision of plates of the earth's crust that, at least for 'young' ranges like the Alps, Andes, and Himalayas, are still moving.

UNESCO: 83e

In each of these, the collision caused a big change of momentum, an exchange of energy to say the least.

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