The mysterious metal sphere fell to the ground in a remote area of northern Namibia has now been identified as a hydrazine tank from an unmanned rocket, commonly used in satellite launches. When the 13lbs, 14 inch ball smashed to earth in mid- November it sparked a national security issue with the Namibian authorities asking NASA for help in identifying it.


It was most likely a fuel tank for storing hydrazine on unmanned rockets.When the ball fell it caused a crater 12 inches deep and 13ft wide, although it was found some 60ft away.For more details of it Read here