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The case of the Betz sphere, a mysterious metallic sphere accidentally found by an American family during the 1970s that had the ability to move on its own... At the time, the sphere caused a great media frenzy and came to be described by many as "alien technology." It all started in April 1974, when a family from the city of Jacksonville, Florida, found a strange spherical metallic object with an approximate weight of 20 pounds and dimensions somewhat smaller than those of a bowling ball.