What Is a Time Crystal? Something as simple as a team of spinning atoms! Imagine a row of tiny magnets. You tap them once every second. Instead of moving every second, they move every other second—and keep that steady rhythm even if your taps aren’t perfect. That’s a time crystal. Scientists are finding signs of this in some ordinary crystals, too. If matter can keep rhythms like this, living cells might use similar steady beats to work together. A mind-bending glimpse into the strange possibili