A cloud of ultracold atoms, trapped in a mirror cavity, spontaneously began to pulse like an eternal pendulum. That’s a time crystal—a new form of matter that 'ticks' without stopping. Such systems could become the basis for clocks that never need winding.
🎯 Theorists described time crystals in 2012, but the scientific community initially rejected the idea, thinking it violated the laws of thermodynamics.
🎬 The idea of structures living in time cycles echoes the plot of the movie 'Groundhog Day'—only here it’s not a day that repeats, but a quantum state.