December 23, 2011
FOR GOD'S SAKE DON'T TOUCH IT OR IT'LL BE WAR OF THE WORLDS FOR REAL!!11!!
Update: Solved! The orb is apparently a "bladder tank" for an unmanned rocket. (Thanks, FE)
Seriously! Don't touch any seemingly innocuous metallic object from space. The second you come into contact with it, it'll pop open and some evil, alien-made droid will expand a thousand times the size of the ball and start destroying the military.
That's just Space Invaders 101.
A large metallic ball fell out of the sky on a remote grassland in Namibia, prompting baffled authorities to contact NASA and the European space agency. (Source)