Stress is a very real factor in the structure of our universe. Not the kind of stress that students experience when taking a test, but rather the physical stresses that affect everyday objects.

Add Yahoo as a preferred source to see more of our stories on Google. The particles that are in an atom: protons, neutrons and electrons The particles that are in protons and neutrons: quarks The four ...

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Amid the many mysteries of quantum physics, subatomic particles don't always follow the rules of the physical world. They can exist in two places at once, pass through solid barriers and even ...