Nuclear Detonation Sensors, or NUDETS in militaryspeak, are devices which nations use to detect (duh) nuclear detonations on the earth's surface. The instrument was originally known as a bhangmeter (oh, those funny men).

One type consists of infrared cameras aboard other-purposed satellites such as MilStar and possibly GPS, these sensors constantly watch the earth for the characteristic bright, bright double flash of an atomic explosion, known as a 'High Energy Event.' They are monitored from U.S. Space Command SPACECOM in Colorado.

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