Matter behaves differently at the very small level than it does at our ordinary, visible level. At the smallest levels of material instantiation, two objects can be “entangled,” meaning that what happens to one object affects what happens to its partner. For quantum particles to be entangled, they must both have been part of the same larger system/object at one time. When the larger object to which they both belonged no longer holds its integrity, its parts are no longer physically yoked. These now freed quantum particles may relocate to entirely different places in the universe, but they never forget their original family, so what happens to their previous family members continues to affect them. That’s a simple explanation of quantum entaglement.