The theory of loop quantum gravity suggests that spacetime is quantized from "summary" of Reality Is Not What It Seems by Carlo Rovelli
According to loop quantum gravity, spacetime is not continuous. Instead, it is granular, made up of tiny indivisible chunks. This idea challenges the traditional conception of spacetime as a smooth and continuous fabric. In loop quantum gravity, spacetime is quantized, meaning it is divided into discrete units. These units are extremely small, on the order of the Planck length, which is about 10^-35 meters. At this scale, the fabric of spacetime is no longer continuous but rather composed of discrete building blocks. This quantization of spacetime has profound implications for our understanding of the universe. It suggests that there is a fundamental granularity to the fabric of reality itself. Just as matter is made up of atom...
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