Definition: In physics, coexplosion is a phenomenon in which two or more objects collide with each other at high speeds and then explode simultaneously. This type of collision occurs when both objects are moving very fast relative to one another, but they are separated by a significant distance. The explosion can occur due to the colliding objects' kinetic energy exceeding their gravitational potential energy. This phenomenon is often associated with nuclear fusion reactions in stars, where it's believed that coexplosion between two massive stars can lead to
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