Iridium is an rare-earth element said to only be found in comets, meteorites and asteroids. There is a globally distributed layer of this element around the Earth that maps back to the Chicxulub asteroid impact that caused a mass extinction event on Earth at the Cretaceous-Paleogene boundary (the same mass extinction event that finished the dinosaurs).

This miniature work considers the cross exchanges between space and earth and in a gesture of reverse sample return (usually scientific missions target bringing samples back to Earth), a bead of Iridium is returned to the belly of asteroid Itokawa.