This above piece of aluminum is some 250,000 years old. What makes that incredible is that aluminum was invented just about 200 years ago. Some are hailing the discovery as proof that aliens have visited the Earth. The piece was found in Romania in 1973 but was not publicly known since Romania was under communist rule at the time. Using outdated aging methods, they believed the piece to be between 400 and 80,000 years old. That estimate is now 250,000 years old.
Builders working on the shores of the Mures River not far from the central Romanian town of Aiud found three objects 10 metres (33 feet) under the ground.
They appeared to be unusual and very old, and archaeologists were bought in who immediately identified two of them as being fossils.
The third looked to be a piece of man-made metal, although very light, and it was suspected that it might be the end of an axe.
All three were sent together with the others for further analysis to Cluj, the main city of the Romanian region of Transylvania.
It was quickly determined that the two large bones belonged to a large extinct mammal that died 10,000-80,000 years ago, but experts were stunned to find out that the third object was a piece of very lightweight metal, and appeared to have been manufactured.
According to tests, the object is made of 12 metals, 90% aluminium, and it was dated by Romanian officials as being 250,000 years old. The initial results were later confirmed by a lab in Lausanne, Switzerland.