Meteorites. Past
This is an Earth-made iron-cast object that resembles a meteorite and weighs more than 250kg. The original model used to produce the work was destroyed by the molten metal, making every specimen unique.

Meteorites. Future
This sculptures are part of a series of geometric Earth-made objects (meteorites) cast out of bismuth metal (Bi), a compound with a half-life a billion times longer than the estimated age of the Universe. 

The decay of these objects is so slow that if ever put in space they would remain stable after the demise of our solar system.