Astronomers have confirmed the Grand Unified Theory by observing that protons decay in laboratory experiments.

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The Grand Unified Theory is a theoretical framework that attempts to unify the fundamental forces of nature, including the strong force, weak force, and electromagnetic force. To date, there is no experimental evidence for proton decay that would confirm the Grand Unified Theory. While experiments have placed limits on the rate of proton decay, there have been no confirmed detections of it to date.

Astronomers Have Confirmed the Grand Unified Theory by Observing That