* Astronomy

Mysterious metal balls found in Vietnam may be space debris: officials

Officials from the defence ministry say three strange objects discovered in northern Vietnam last weekend are most likely space debris.
The spheres, weighing 250 grams, six kilos and 45 kilos, were found at three separate locations in the northern provinces of Yen Bai and Tuyen Quang last Saturday. They had reportedly fallen from space.
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The objects that fell from the sky in the provinces of Tuyen Quang and Yen Bai in northern Vietnam on January 2 may be the gas tank of an expired satellite that did not completely burn in the atmosphere, or the result of a failed launch of a satellite, a Vietnamese expert has said.
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