The material comes from manned Russian space rockets of the Soyuz family which carry the Cosmonauts to the ISS. They are launched in Baikonur Cosmodrome and complete their journey into outer space in three stages. The burnt-out rocket stage I is jettisoned in flight, falling back into the Kazakh steppe.
Werenbach travels into the steppe to recover the material in person. In this way, we are able to guarantee its authenticity and verify which rocket the material comes from.