Physicists created a tiny universe where time emerged without a clock

According to ScienceDaily, physicists at the University of Birmingham built a tiny "mini universe" out of twenty-four thousand ultracold atoms to probe one of the strangest questions in physics: what if time doesn't exist until something changes? The team reported that the flow of time can emerge naturally from changes inside a quantum system, without any external clock ticking in the background. It's a hint that time, rather than being a fixed backdrop, may be something that arises from within.

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