A particle can be in two places at once—until gravity steps in. Even the gentlest spacetime ripples, called gravitational waves, make ghostly states vanish. The heavier the object, the faster the blur fades. Tests with tiny mirrors may soon solve why our world looks solid.
🎯 A single graviton is so weak that a billion billion of them could barely lift a paperclip, yet their combined whisper collapses a quantum state.