For months now, there's been speculation that researchers might have finally created time crystals — strange crystals that have an atomic structure that repeats not just in space, but in time, putting them in constant oscillation without energy. Now it's official — researchers have just reported in detail how to make and measure these bizarre crystals. And two independent teams of scientists claim they've actually created time crystals in the lab based off this blueprint, confirming the existence of an entirely new phase of matter.
The first known type of non-equilibrium matter and one that is directly related to time. It will be interesting to see what possible uses come of it.