Two metal-like orbs that are believed to have fallen out of the sky were discovered in northern Vietnam at the weekend.

Rice terraces in Vietnam's Yen Bai Province.
Vietnam's Yen Bai Province.

A local witness reported hearing a sound like thunder, despite a clear sky, and later one of the ‘space balls’ – measuring about 80cm in diameter – was found near a stream in Tuyen Quang Province. A second ball – measuring 27cm in diameter – was found in Yen Bai Province. Authorities have reportedly confirmed that the balls are not explosives. Similar orbs have been reported as falling from the sky elsewhere in the world over the past 20 years. Read more: 

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