SLOWEST ATOM DECAY..

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Around 1500 meters deep in the Italian Gran Sasso mountains is the underground laboratory LNGS (Laboratori Nazionali del Gran Sasso), in which scientists search for dark matter particles in a lab sealed off from any radioactivity interference.

Their tool is the XENON1T detector, the central part of which consists of a cylindrical tank of about one meter in length filled with 3200 kilograms of liquid xenon at a temperature of -95 degrees Celsius. Until now, researchers using this detector have not yet observed any dark matter particles, but they have now managed to observe the decay of the Xenon-124 atom for the first time.

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